You will be given a trivia clue, and the category it belongs to. You should answer with the best answer that belongs in the category and is described by the clue. For simplicity, answers should be in all lower cased letters.

Category: GET TO WORK 
Clue: It's a type of criminal, or a person who heats & hammers metal into shape
forger

Category: FOOD 
Clue: This salad dressing is actually American; its name may come from the fact that it once contained caviar
russian dressing

Category: LET'S PLAY MAH-JONGG 
Clue: Mah-jongg was a U.S. fad in this decade, along with bathtub gin & the Charleston

1920s