Vegetable? Go to consume the lot (7)
I believe the answer is:
shallot
'vegetable?' is the definition.
(thesaurus)
'go to consume the lot' is the wordplay.
'go' becomes 'shot' (I've seen this before).
'to consume' means one lot of letters goes inside another.
'the lot' becomes 'all' (I've seen this before).
'shot' going around 'all' is 'SHALLOT'.
(Other definitions for shallot that I've seen before include "bit of salad" , "Rowing boat" , "Small onion" , "Scallion" , "Species of onion" .)