160 Fun Facts About Egg

An ostrich egg weighs about 1.4 kilograms. Roughly how many chicken eggs is that equivalent to?

Despite the size, ostrich eggs are actually the smallest of any bird relative to the mother, at 1 to 4 percent of her body weight.

Which New Zealand bird lays an egg weighing up to a quarter of its body weight?

A brown kiwi's single egg can weigh 450 grams; the bird's flightlessness means body weight is no obstacle to carrying it.

Which bird lays the smallest egg of any living species, weighing about half a gram?

At the other extreme sits the ostrich's 1.5-kilogram egg, and the shape and size across species tracks the size of the adult bird.

The largest egg ever recorded, at 30 by 14 by 9 centimetres, came from which animal?

They usually hatch inside the mother; the ostrich still holds the record among living birds, though extinct elephant birds and some dinosaurs beat it.

What determines whether a hen lays white or brown eggs, according to a widely cited rule of thumb?

The brown pigment is protoporphyrin IX, a precursor of heme, and shell colour has no effect on taste or quality.

The Araucana, a chicken breed from Chile, is famous for laying eggs of what colour?

The American 'Easter egger' hybrids that lay blue and green eggs descend from it; the breed may also be rumpless, lacking a tail entirely.

Which mineral makes up 95 to 97 percent of a chicken eggshell?

Because of this the shell dissolves in vinegar, which is the basis of the classic 'naked egg' science experiment.

A hen's eggshell is not solid: roughly how many pores does it have for gas exchange?

The pores let the growing chick breathe, and the air cell at the blunt end grows as the egg ages, which is why old eggs float.

What are the spiral bands of tissue that hold the yolk in the centre of an egg white called?

The name comes from the Greek for 'hailstone'; the bands are most obvious in a very fresh egg cracked into a bowl.

A very fresh chicken egg has a small air cell and earns which US quality rating?

Grades are measured during candling, when the egg is held up to a light; as the air cell grows the grade drops through A to B.

What is the most abundant protein in egg white?

Egg white is about 90 percent water and 10 percent protein, and cooking almost doubles how much of that protein the body can absorb.

The yellow of an egg yolk comes from lutein and zeaxanthin, which belong to what class of pigments?

The yolk also holds all the egg's fat and cholesterol and every one of its fat-soluble vitamins.

The greenish ring that forms around the yolk of an overcooked boiled egg is caused by which compound?

It has little effect on flavour, and plunging the eggs into cold water straight after boiling stops it forming.

Why do American supermarkets refrigerate their egg cartons when most European shops do not?

Unwashed European eggs keep their natural coating intact, so they can sit safely on a shelf, though the shells are dirtier.

A 2002 USDA analysis found roughly what proportion of eggs is contaminated with Salmonella?

That works out to about 2.3 million of the 69 billion eggs produced a year, far rarer than the popular fear suggests.

Which country is by far the world's largest egg producer, at over 30 million tonnes a year?

Asia produces about 59 percent of the world's eggs; the United States is a distant second at around 6 million tonnes.

A hen bred for laying can produce roughly how many eggs per year?

Wild junglefowl, the chicken's ancestor, lay only a small clutch or two a season; humans probably domesticated them for eggs before 7500 BCE.

Where did people first begin harvesting chicken eggs for food, around 1500 BCE?

Chickens reached Greece around 800 BCE, where until then the quail had been the main source of eggs.

Ancient Romans crushed their empty eggshells in their plates for what reason?

The habit survives as the superstition of pushing a spoon through the bottom of a finished boiled egg.

Which of these was true of eggs during Lent in medieval Europe?

The pile-up of uneaten eggs before Easter is one reason decorated eggs became a feature of the holiday.

A century egg is cured in a mixture of clay, ash, salt, rice hulls and what?

The alkaline paste pushes the egg's pH to between 9 and 12, turning the white to dark jelly and the yolk creamy grey-green.

Balut, the Filipino fertilised duck egg, is typically incubated for how long before steaming?

Some eaters prefer it while the embryo is still mostly liquid; others want a chewier, more developed duckling.

A tea egg is also called a 'marble egg' because of what?

The boiled egg is cracked, then simmered again in tea, soy sauce and spices, and sold from street carts across China.

Lemuel Benedict claimed he invented eggs Benedict at the Waldorf in 1894 while seeking a cure for what?

He ordered toast, poached eggs, bacon and hollandaise; maître d' Oscar Tschirky swapped in ham and an English muffin, while Delmonico's insists it made the dish first in 1860.

At Southern and Midwestern church suppers, deviled eggs go by which tamer adjective?

'Devilled' has meant highly seasoned food since the 1700s; the same idea gives us deviled ham and fra diavolo sauce.

Which London department store claims to have invented the Scotch egg in 1738?

Rival theories point to a Whitby, Yorkshire snack once wrapped in fish paste, or to the Mughlai nargisi kofta.

The Denver omelette, also called a Western omelette, is traditionally filled with ham, onions and what?

In Spain the word tortilla means a thick potato omelette, while in Mexico it means the flatbread.

Shakshouka, eggs poached in a spiced tomato and pepper sauce, originated in which region?

The name means 'mixture' in Algerian Arabic; Maghrebi Jewish migrants brought it to Israel in the 1950s, where it was widely adopted.

The name of the confection meringue first appeared in print in 1692 in a cookbook by which French chef?

The same author published the earliest known crème brûlée recipe a year earlier; the word reached English in a 1706 translation.

What alternative name honouring a Norman town famous for its butter has hollandaise been given?

The 'Dutch' name is thought to have stuck during the Franco-Dutch War; a recipe close to it appears in La Varenne's 1651 cookbook.

Most food historians place the origin of mayonnaise in the port of Mahón on which Mediterranean island?

French troops under the Duke of Richelieu took the port in 1756 during the Seven Years' War, which is when the sauce is thought to have been named.

Which two ingredients does the New York soda-fountain drink of milk, chocolate syrup and seltzer falsely promise?

One theory says 'egg' is a corruption of the Yiddish echt, meaning 'genuine'; the drink goes flat fast, which is why it never travelled well.

At which institution did the Eggnog Riot of December 1826, over whiskey-spiked Christmas eggnog, take place?

A young Jefferson Davis was among the cadets involved but escaped punishment; the drink itself likely descends from the medieval milk posset.

Kinder Surprise eggs, sold by the billions since 1974, are illegal to import into which country?

A 1938 law bans confectionery containing a 'non-nutritive object', and one Manitoba resident was threatened with a fine for carrying a single egg into Minnesota.

Under which brand was the Cadbury Creme Egg first sold when it launched in 1963?

The white-and-yellow fondant is meant to mimic a soft-boiled egg, and each one is made as two half shells joined while warm.

How many Imperial Easter eggs did Fabergé's workshop make for the tsars between 1885 and 1917?

Ten were for Alexander III and forty for Nicholas II, and 44 survive in whole or in part; a lost 1887 egg turned up in the United States years later.

The very first Fabergé Imperial egg, presented in 1885, opened to reveal what inside?

It was inspired by an 18th-century ivory hen egg in the Danish Royal Collection, and Empress Maria Feodorovna was Danish by birth.

Which president and first lady moved the Easter egg roll to the White House lawn in 1878?

Congress had banned rolling on the Capitol grounds in 1876 after a rowdy egg roll wrecked the lawn.

Egg tapping, the Easter game of knocking eggs together, is plagued by what cheating?

The game was already recorded in 14th-century Zagreb, and it survives in Louisiana as 'pacqueing'.

Which author fixed Humpty Dumpty in the public mind as an egg in 1871?

The rhyme was probably a riddle to begin with, and in the 1600s 'humpty dumpty' was a drink of brandy boiled with ale.

Which British Columbia newspaper editor invented the modern egg carton in 1911?

An American, Francis H. Sherman, patented the pressed-paper-pulp version we recognise today in 1931.

The European Union's ban on conventional battery cages for laying hens took effect in which year?

The directive was passed in 1999 with a 12-year phase-out; Bhutan banned the cages the same year.

Egg allergy is the second most common food allergy in American children. What is the first?

Most children outgrow an egg allergy by age five, though it can persist for life.

Which large flightless bird lays bright green clutches that the male incubates for around 50 days?

Only ostrich and emu eggs are bigger, and the father then guards the chicks for about nine months.

What is the temporary sharp bump on a hatchling's beak, used to break out of the shell?

Reptiles and even the platypus have one too; the chick first uses it to pierce the air sac before working through the shell.

Which bird was most likely domesticated for its eggs before 7500 BCE?

Chickens descend from jungle fowl native to tropical Southeast Asia and the Indian subcontinent.

Before chickens reached Greece around 800 BCE, which bird was the Greeks' primary egg source?

Chickens reached Sumer and Egypt by 1500 BCE and Greece a few centuries later.

Which sweet spread may have originated from 17th-century French eggs scrambled with fruit juice?

Eggs scrambled with acidic fruit juices were a French fashion of the 1600s.

In which US city did a company begin drying egg yolk and white into a meal-like powder in 1878?

Dried egg production boomed again during World War II to feed US forces.

Roughly how many eggs a year does the wild Asian fowl ancestor of the chicken lay?

Millennia of selective breeding taught domestic hens to lay year-round instead of only in the breeding season.

Which country's people consider gull eggs a delicacy, along with England?

Wild bird eggs are protected by law in many countries, so gull eggs are a niche seasonal treat.

How many eggs was each American projected to eat in 2019, the most since 1973?

Consumption still trailed the 405 eggs per person Americans ate in 1945.

What is the process of holding an egg to a light to check its air cell and quality called?

Blood vessels seen during candling are not conclusive proof of fertilisation.

The name of the spiral cords that anchor a yolk comes from a Greek word meaning what?

The chalazae are one or two spiral bands of tissue suspending the yolk in the white.

A very old egg does what when placed in a bowl of water?

The air cell grows as water is lost through the shell's pores, making the egg less dense.

Which pigment, a breakdown product of heme, gives some eggshells their blue colour?

Brown shells get their colour from protoporphyrin IX, a heme precursor.

Why do brown eggs have a higher incidence of blood spots reaching shoppers?

Candling shines light through the shell, which brown pigment blocks.

Which fibrous protein mainly makes up the clear membrane you peel from a boiled egg?

Eggshell membranes are even sold commercially as a dietary supplement.

Roughly how much of egg white is water?

The remaining tenth is almost entirely protein, with under one percent carbohydrate.

Egg white is used in preparing vaccines against which disease?

Egg white contains almost no fat and less than one percent carbohydrate.

Feeding hens which bloom's petals is a known way to deepen yolk colour?

Yellow maize does the same job; artificial colour additives are forbidden in the US.

A yolkless egg is most often produced by what kind of hen?

Such eggs were once nicknamed cock eggs because people assumed roosters laid them.

Cooking roughly doubles egg protein's bioavailability, from 51% raw to about what?

Cooked eggs are also easier to digest and carry a lower salmonellosis risk.

Between which temperatures does egg yolk turn from liquid to gel?

Egg white gels across a wider 60 to 73 °C range, with the outer albumen setting last.

To pasteurise eggs in the shell, they are held at 57 °C for how long?

The white turns slightly milky, and whipping meringue takes longer, but final volume is nearly the same.

A 2025 study's ideal boiled egg alternates hot and tepid water baths how many times?

The periodic method preserves both textures and more of the egg's nutrients.

Which fishy-smelling compound can taint eggs when brown-egg hens eat rapeseed or soy meal?

The hen's gut microbes metabolise the feed into the compound, which ends up in the egg.

British eggs are generally considered safe for how long without refrigeration?

UK hens are immunised against salmonella and their unwashed shells keep the protective cuticle.

A salted duck egg stops absorbing salt after about how long?

The yolk turns orange-red and firm while the white stays somewhat liquid.

Which juice is often added to pickled eggs to turn them red?

Left in the brine for weeks, vinegar dissolves much of the shell's calcium carbonate.

To roughly what pH does a century egg's alkaline coating raise the egg's contents?

The process breaks flavourless proteins and fats into simpler, flavourful ones, like an inorganic fermentation.

How many kilocalories does a 50-gram chicken egg provide, roughly?

The same egg carries about 6 grams of protein.

Which cooking method loses the most vitamin B12 from an egg?

Oddly, absorption of B12 from fried or boiled eggs is more than double that from scrambled ones.

Which insecticide contaminated millions of European eggs pulled from sale in 2017?

The Netherlands, Belgium and Germany all blocked eggs from sale.

Which stamp do British eggs from salmonella-vaccinated hens carry?

The mark is awarded by the British Egg Industry Council.

Which US egg quality tier is rarely sold retail and mostly turned into liquid or dried products?

Grade A is the quality most often sold in stores.

A New England TV jingle proclaimed brown eggs are local eggs, and local eggs are what?

Local breeds like the Rhode Island Red lay brown eggs, unlike most of the US.

In which country are brown eggs so unpopular that the top supplier packages them for export?

Egyptian demand is almost entirely for white 'table eggs'.

What does an EU egg code beginning with 0 signify?

The scale runs from 3 for caged chickens down to 0 for organic.

Which technology lets egg producers avoid culling male chicks by identifying sex before hatching?

By April 2025 it covered 28 percent of Europe's laying hens.

During which Persian New Year festival does each family member decorate a hard-boiled egg?

The eggs are set together in a bowl before the spring equinox.

In Barcelona, a hollow eggshell dancing on a fountain jet is a tradition of which feast?

The dancing egg custom in Catalan cities dates to the sixteenth century.

How old are the oldest decorated ratite eggs found in Africa?

The engraved shells are ostrich eggs; decorated ostrich eggs were also placed in Sumerian and Egyptian graves 5,000 years ago.

Which country briefly banned giving Easter eggs in 1916 because of wartime scarcity?

The Easter Egg Act was lifted only when the war ended.

Which Spanish Easter dish uses up Lenten eggs as a primary hard-boiled ingredient?

Spanish godparents also give children an Easter mona.

What is the Polish Holy Saturday blessing of decorated Easter baskets called?

The baskets hold Easter eggs and other symbolic foods.

Greek women traditionally dye Easter eggs red on Thursday using what?

The eggs, called kokkina avga, may line the centre of a braided tsoureki loaf.

King Edward I's 1290 household accounts record buying how many decorated Pace-eggs?

The eggs were coloured or gilded and handed to the royal household.

Ukrainian pysanky take their name from a verb meaning what?

Designs are 'written' with beeswax in a batik-style resist method, not painted.

In Germany, decorated public wells at Easter are known as what?

Eggs also hang from trees and bushes as Easter egg trees.

Where is the annual egg jarping world championship held each Easter?

Egg jarping is the northern English name for egg tapping.

In South Louisiana, egg tapping goes by which name?

Louisiana Creoles hold that the winner eats the losers' eggs each round.

Which Turin widow filled empty eggshells with molten chocolate in 1725?

Chocolate eggs had first appeared at the court of Louis XIV at Versailles.

Which company produced the first hollow chocolate egg, in 1873?

Cadbury followed with its first Easter egg in 1875 after developing a mouldable cocoa butter.

About how many chocolate Easter eggs are sold in the UK each year?

Plastic packaging has gradually been replaced with recyclable paper and cardboard.

An 8-metre pysanka sculpture stands in Vegreville, in which Canadian province?

The giant Ukrainian Easter egg is about 27 feet tall.

In Eastern legend, whose basket of eggs turned red on seeing the risen Christ?

Another version has the egg turning red before the Roman emperor.

On the Passover seder plate, the hard-boiled egg represents what?

The hunt for the hidden afikomen has parallels with the Easter egg hunt.

How many Fabergé Imperial eggs were commissioned by Tsar Alexander III?

Nicholas II commissioned the other 40 for his wife and mother.

In which two years were no Fabergé Imperial eggs made?

Production paused during the Russo-Japanese War.

How much did the 1885 Hen Egg, the first Fabergé Imperial egg, cost?

Six weeks later the emperor made Fabergé supplier to the imperial court.

Which Siberian gold-mine industrialist commissioned seven Fabergé eggs for his wife?

Fabergé was asked for twelve, but only seven Kelch eggs appear to have been completed.

How many Fabergé Imperial eggs are displayed at Moscow's Kremlin Armory Museum?

Six of the delivered imperial eggs are lost, all of them once belonging to Maria Feodorovna.

Which Soviet leader had many Fabergé eggs sold abroad in 1927 to raise foreign currency?

Between 1930 and 1933, 14 imperial eggs left Russia, many to Armand Hammer.

Which oligarch bought the nine-egg Forbes Fabergé collection before its 2004 auction?

He said he paid just over US$100 million and later opened a Fabergé Museum in Saint Petersburg.

For how much did the Fabergé Winter Egg sell at Christie's in December 2025?

The same egg had fetched US$9.6 million in 2002.

Which 1983 James Bond film centres on a Fabergé egg heist?

Fabergé UK later released a 007 Octopussy capsule collection.

The earliest omelettes are believed to have been cooked in which ancient land?

They were nearly indistinguishable from the Iranian herb frittata kookoo sabzi.

The omelette de la mère Poulard, called the world's most famous, comes from where?

It is served without fillings but often with heavy garnishes.

Alexandre Dumas's 'Arabian omelette' recipe called for the egg of which bird?

It was served with a spicy tomato-pepper sauce, a recipe from the Bey's cook.

Which Japanese omelette is filled with fried rice and topped with ketchup?

The name blends the French word omelette with the English word rice.

The omelette Arnold Bennett was created at which London hotel's grill?

Chef Jean Baptiste Virlogeux made it for the writer with smoked haddock, cheese and cream.

The hangtown fry of bacon and breaded oysters originated in which Gold Rush town?

Placerville was nicknamed Hangtown, giving the omelette its name.

Which Thai omelette is deep-fried in a wok of oil and served over rice?

It is usually served with Sriracha sauce and cilantro.

Which Italian city claims to have invented the frittata, favouring a version made with pasta?

Neapolitans call the pasta frittata a stroke of local genius.

The word quiche was first attested in 1605 in which regional language?

It may relate to the German Kuchen, meaning cake or tart.

Which 1982 satirical book did James Peterson call the dish's 'final humiliation'?

He felt a rugged country dish had become a symbol of effete snobbery.

On American Chinese menus, egg drop soup is also literally translated as what?

Cornstarch is often used to thicken the American version.

Which Greek egg-and-lemon soup is stirred slowly so the egg does not curdle?

Rice and lemon join the chicken stock in the Cypriot and Greek dish.

Guangzhou pastry chefs modelled the Cantonese daahn taat on which English baked good?

Guangzhou department stores created it as a 'Weekly Special' in the early 20th century.

Which fast-food chain bought the Macau pastel de nata recipe from Lord Stow's Bakery in 1999?

The chain introduced the caramelised-top tart across Asia, including Singapore and Taiwan.

Which Puerto Rican eggnog is made with rum and coconut milk?

Mexican rompope uses cinnamon and rum; Peru's version uses pisco.

Which hot eggnog cocktail was invented by British journalist Pierce Egan in the 1820s?

It features in Damon Runyon's 1932 story 'Dancing Dan's Christmas'.

Which Dutch liqueur of around 20% alcohol is essentially a bottled eggnog?

US law requires commercial eggnog to have at least 1% egg yolk solids.

A 2010 Rockefeller University test found salmonella in strong eggnog was gone after how long?

At least 20% alcohol plus refrigeration is recommended for aged eggnog safety.

Which future Confederate president took part in the 1826 Eggnog Riot without punishment?

Twenty cadets and one enlisted soldier were court-martialled.

Which egg white protein is the major allergen and a trypsin inhibitor?

Egg white contains around 149 different proteins.

Which metal bowl has been used in France since the 18th century to stabilise egg-white foams?

A silver-plated bowl or a pinch of powdered copper works the same way.

Which vitamin can become deficient after months of eating raw egg whites daily?

Avidin in raw whites binds the vitamin and blocks absorption.

Photographs bound with egg white, popular from 1855 to 1890, are called what?

In bookbinding, egg white called glaire is used to adhere gold leaf.

How many eggs did the FDA order recalled in August 2010 over salmonella fears?

Thorough cooking removes the direct threat but not cross-contamination.

Which unsaturated fat makes up about 47% of the fat in an egg yolk?

Palmitic acid is the main saturated fat in yolk at about 23 percent.

Which antibody transfers from hen to yolk to protect the embryo?

The passive immunity guards both embryo and hatchling against microbes.

Feeding hens large amounts of which vegetable tends to produce red or deep orange yolks?

Free-range yolks can range from nearly white to olive green depending on feed.

Which archaic name was given to yolkless eggs believed to be laid by roosters?

They are also called dwarf or wind eggs.

The earliest documented scrambled-egg recipe appears in a 14th-century cookbook from which country?

The Libro della cucina predates most European egg cookery texts.

Scotch woodcock is scrambled eggs served on toast spread with what?

Despite the name, no bird is involved.

Which Venezuelan and Colombian scrambled-egg dish takes its name from a bird?

'Parrot eggs' are scrambled with butter, onions and tomatoes.

Escoffier's double-boiler method for scrambled eggs can take how long?

It never browns the eggs and gives an aerated, creamy result.

In Pennsylvania, an over-easy fried egg is commonly given what name?

The name comes from dipping toast into the yolks.

The Dutch fried-egg dish uitsmijter shares its name with which job?

It literally means 'out-thrower' and is a common lunch dish.

In Thai menus, which two words after a dish's name mean 'add a fried egg'?

Khai dao literally means 'star egg'.

A Portuguese or Brazilian steak topped with a runny fried egg is called what?

The name means 'horse-riding steak'.

Which German open ham sandwich is topped with a sunny-side-up fried egg?

Fried eggs are typically lunch dishes in Germany rather than breakfast.

Which Roman cookbook, the first known, includes recipes with boiled eggs?

At least one of its recipes calls for preserved boiled eggs.

Which chemical, along with vitamin C, has been shown to reverse the cooking of an egg white?

The trick works by breaking connections between denatured proteins.

Which Danish company invented the machine-made 'long egg' for even slices?

The machine debuted in 1974; Kenko Mayonnaise makes long eggs in Japan.

Which chef published a 'perfect boiled egg' recipe after 'relentless trials'?

His method starts eggs in cold water barely covering them and finishes in six minutes.

In Britain and Australia, toast strips for dipping in a soft-boiled egg are called what?

The egg top is removed with a knife, spoon or a spring-loaded egg topper.

Which Sephardic braised eggs are slow-cooked overnight and served with the stew chamin?

The dish was first documented in medieval Spain.

Which Japanese company makes kimipuchi, a yolk product that stays soft when microwaved?

It is coated in egg white to mimic soft-boiled eggs in convenience-store bento.

Which US body recommended piercing eggshells before boiling in 1966, advice later reversed?

The American Egg Board now warns piercing can introduce bacteria and hairline cracks.

Which Turkish dish pairs poached eggs with garlic yogurt and red-pepper butter?

Bulgaria's Panagyurishte-style eggs are a close cousin.

Which Colombian breakfast poaches eggs in a scallion and coriander milk broth?

It is also known simply as caldo de huevo, or egg soup.

Adding which pantry acid to poaching water speeds setting and limits white dispersal?

Straining the egg first also removes the thin white that forms foam.

Japanese tamagoyaki is traditionally cooked in a pan of what shape, called a makiyakinabe?

The rolled omelette emerged as food for Edo-period townspeople; a tamagoyaki shop founded in Ōji in 1648 is still trading.

Which Edo-period change allowed tamagoyaki to appear in Japan?

The early version, tamago fuwafuwa, steamed beaten egg in a konbu and bonito broth.

The dish of an egg fried inside a hole in a slice of bread is notorious for having how many names?

'Toad in the hole' is sometimes applied, though that usually means sausages baked in Yorkshire pudding batter.

Which 1896 cookbook contains one of the earliest printed recipes for an egg salad sandwich?

Fannie Farmer's book standardised measurements; Jewish versions use schmaltz and onions and are nicknamed 'Jewish eggs'.

In 19th-century Mexican cookbooks, huevos rancheros were sunny-side-up eggs in what?

The 'rancheros' label was added by city dwellers, referring to the cowherds of the haciendas who cooked in salsa.