What gives beer its distinctive bitter flavour?

More Questions:

What French company is represented by a mascot named "Bibendum"?

Aron and Caleb Trask are twins in what novel?

Who wrote the novel "Little House on the Prairie"?

In "Uncle Tom's Cabin', Eliza's famous flight across the ice floes takes place on what frozen river?

What US city is home to the Bishop Museum?

What volcano is the world's tallest mountain, when measured base to summit?

'Mach One" refers to the speed of what?

What constellation represents a hunter with a club a shield?

What comedian had a cable special in 1999 titled "Bigger and Blacker"?

Gregory Peck played Lt. Joe Clemons in what 1950s film?

In The Simpsons, who said: "Hello, beautiful. No ring, I see. So you are only arranged to be married."?

In the movie "Jerry Maguire', Jerry sings along to what Tom Petty song on his car radio?

What American outlaw went by such names as Kid Antrim, Henry McCarty and William Bonney?

What U.S. President declared "The ballot is stronger than the bullet"?

What year did the TV show "Gunsmoke" change its length from 30 minutes to 1 hour?