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: WALK INTO A "BAR" 
Clue: A pier, wharf or landing place: San Francisco has a famous one
embarcadero

Category: THE CRUCIBLE 
Clue: Crucibles are sometimes made out of this ceramic material made by firing pure clay
porcelain

Category: ALSO A 3-LETTER TREE 
Clue: A type of Eucalyptus, or something kids chew

gum