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 consistency, answers should be in all lower cased letters.

Q: Category: JOE THE PLUMBER 
Clue: Joe knows how to "assemble" 2 words into this 1-word toilet part by combining comedienne Lucille & a male chicken

A: a ballcock
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Q: Category: WINE 
Clue: The Douro Valley in this country is an important port producer

A: portugal
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Q: Category: NUTRITION 
Clue: Oreos no longer contain this unhealthful fat that must be listed on food labels as of Jan. 1, 2006

A:
trans fats
****