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: STARTS & ENDS WITH "H" 
Clue: To secretly devise something, like a plan for a really good door on my boat
hatch

Category: LAW 
Clue: In Latin legal lingo it means "by the fact itself"
ipso facto

Category: THEY NAMED A FOOD FOR ME 
Clue: Do "tell": this Italian composer was quite a gourmet, & an omelet with foie gras & truffles is named for him

rossini