What food item does the painting technique "Tempera" commonly uses as a binder?

More Questions:

What are the main ingredients of borscht?

What does an NFL referee signal by stretching his arms out at his sides with his palms down?

In which play does Dame Pliant appear?

In what country would you find the mouths of the Limpopo river?

Which media is read from the inside out, compact discs or vinyl records?

What year did the US issue a patent on the production of margarine?

What irrational number is the base of a natural logarithm?

What is the name for the longest side of a right-angled triangle?

What made-up expletive is "Battlestar Galactica's" dirty word of choice?

At what New York hotel was Sid Vicious accused of killing Nancy Spungen?

Actress Kathy Kinney is best known for portraying what sitcom character for nine seasons?

In which country was Robert Maxwell born?

How old was Buddy Holly when he died in a plane crash in 1959?

How many countries border the Black Sea?

The "Atomium" landmark is located in which country?