Q 01/05

Tofu is made by pressing the curds of what?

A) Boiled chickpea flour

B) Coagulated soy milk

C) Fermented rice water

D) Curdled almond milk

Answer · why

B) Coagulated soy milk

The four common textures are silken, soft, firm and extra firm.

Q 02/05

Tofu has been eaten for roughly how long?

A) About 500 years

B) Over 5,000 years

C) Over 2,000 years

D) About 200 years

Answer · why

C) Over 2,000 years

It originated in China and is a traditional part of East and Southeast Asian cuisines.

Q 03/05

Chinese legend credits which Han dynasty prince with inventing tofu?

A) Liu Bei

B) Liu Xiu

C) Liu Bang

D) Liu An

Answer · why

D) Liu An

He also edited the Huainanzi, a compendium of Daoist, Confucian and Legalist teachings, in 139 BC.

Q 04/05

What 1960 discovery gave support to the theory that tofu dates to the Han dynasty?

A) A bronze press used for curds

B) A stone mural in an Eastern Han tomb

C) A sealed jar of preserved bean curd

D) A bamboo scroll of kitchen recipes

Answer · why

B) A stone mural in an Eastern Han tomb

Some scholars still argue Han-era tofu was too rudimentary to count as the real thing.

Q 05/05

One theory says tofu was discovered by accident when ground boiled soybeans were mixed with what?

A) Sour milk

B) Impure sea salt

C) Wood ash

D) Rice vinegar

Answer · why

B) Impure sea salt

The calcium and magnesium salts in unrefined sea salt would have curdled the slurry into a gel.