Riddle

I help to mature your spirits. When moistened I fulfill my purpose. Should I dry out, my task will fail and my quarry may be worthless.

Choose an answer

A.A barrel
B.A wine cellar
C.A cellar door
D.A cork
Hint: It's a 2-word phrase with 5 letters, starting with "A".

Answer

A cork

Why this is the answer

A wine cork must stay moist to keep its seal tight; if it dries out and shrinks, the wine ('spirits') aging inside can spoil.

This riddle is filed under Hard/Difficult Riddles and rated Medium.