What are the two primary ingredients that go into a Hollandaise sauce?

More Questions:

Tennis player Rafael Nadal goes by what nickname?

In what Missouri town did Mark Twain grow up?

What psychologist's autobiography was titled "Flashbacks"?

What does the brass plate on Number 10 Downing Street say?

Hyperopia is the scientific name for what eye condition?

Though botanically a fruit, what food was officially ruled a vegetable by the US Supreme Court in 1893?

What does a hygrometer measure?

What are the first names of the popular musical duo "Hall & Oates"?

What year did Alfred Hitchcock become a citizen of the United States?

What movie starring Bruce Willis contains the line "I see dead people"?

Who was the first person to receive an "Honorary Award" at the Academy Awards?

In what decade was the Social Security Act signed into law?

What legendary bank robber did the "Lady in Red" betray to federal agents?

What city hosted the 2008 Summer Olympics?

What month in 2017 did North Korea fire a test missile across the Sea of Japan, prompting international condemnation?