Very quietly tucking into beer and fruit (5)
I believe the answer is:
apple
'fruit' is the definition.
(I know that apple is a type of fruit)
'very quietly tucking into beer' is the wordplay.
'very quietly' becomes 'pp' (musical abbreviation for pianissimo).
'tucking into' indicates putting letters inside.
'beer' becomes 'ale' (type of beer).
'pp' inserted into 'ale' is 'APPLE'.
'and' acts as a link.
(Other definitions for apple that I've seen before include "Crab, cooking or eating fruit" , "Pomaceous fruit" , "Beneficiary of 23 [LOVELACE]" , "The - Cart (Shaw)" , "One poisoned Disney's Snow White" .)