Where pig may go to be cosily warm (6)
I believe the answer is:
toasty
'cosily warm' is the definition.
(I've seen this before)
'where pig may go to' is the wordplay.
I cannot quite understand how this works, but
'to' is found in the answer.
This may be the basis of clue (or it may be nonsense).
'be' is the link.
(Other definitions for toasty that I've seen before include "Sandwich" , "Hot food" , "Cosily warm" , "snack" , "Pleasantly warm" .)