Burn the tea, right? (4)
I believe the answer is:
char
'burn' is the definition.
(charring is a kind of burning)
'tea right?' is the wordplay.
'tea' becomes 'cha' (cha is a type of tea).
'right?' becomes 'r' (common abbreviation).
'cha'+'r'='CHAR'
'the' is the link.
(Other definitions for char that I've seen before include "Make black by burning, say toast" , "Scorch, small fish" , "Singe, scorch" , "'Mrs Mopp'" , "Partly burn - cleaning woman" .)