A drink mixed and swallowed by the shy (6)
I believe the answer is:
shandy
'a drink' is the definition.
(shandy is a kind of drink)
'and swallowed by the shy' is the wordplay.
'swallowed by' is an insertion indicator.
'and' going within 'shy' is 'SHANDY'.
'mixed' acts as a link.
This may not be right. It may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for shandy that I've seen before include "Drink of ale and lemonade 96)" , "Drink made of beer and lemonade" , "Alcohol" , "Beer/lemonade drink" , "Beer and lemonade mixture" .)