Madeira's ports? (6)
I believe the answer is:
drinks
'ports?' is the definition.
(port is a kind of drink)
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for drinks that I've seen before include "Consumes alcohol" , "Quaffs, imbibes" , "Swallows liquids" , "Beverages" , "they are to be swallowed" .)