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: CAFETERIA 
Clue: It's a good day to warm up with a bowl of this thick hearty vegetable soup, from the Italian for "something served"
minestrone

Category: EUROPEAN DINING 
Clue: It's said the Witchery by the Castle, on Castle Hill in this Scottish city, is haunted by several ghosts
edinburgh

Category: NATURE 
Clue: This green fruit's juice, which has a high level of citric acid, was used by the British navy to prevent scurvy

limes