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.

Category: FOOD & DRINK 
Clue: Porcini & portobellos are types of these
mushrooms

Category: THE ROARING '20s 
Clue: The American Chronicle says that in 1924 half a million people wrote this Michigander asking for money
henry ford

Category: SINGERS 
Clue: Keith Richards & this singer once used the pseudonyms Wanker, Phelge when composing songs

mick jagger