Smashing up of gate amuses a pig, perhaps (7,4)
I believe the answer is:
sausage meat
'pig perhaps' is the definition.
'sausage meat' can be an answer for 'pig' (I've seen this before). I'm not certain of the 'perhaps' bit.
'smashing up of gate amuses a' is the wordplay.
'smashing' indicates putting letters inside (some letters smash into others).
'up of' indicates an anagram (I've seen 'up' mean this (letters get chucked up)).
'gate'+'amuses'='gateamuses'
'gateamuses' anagrammed gives 'susagemeat'.
'susagemeat' going around 'a' is 'SAUSAGE-MEAT'.
Can you help me to learn more?
(Other definitions for sausage meat that I've seen before include "Base for Scotch eggs" , "Pig" , "Scotch egg ingredient" , "Party roll filler" , "Food ingredient" .)