Liquid food caught on? Just a touch (7)
I believe the answer is:
soupcon
'just a touch' is the definition.
'liquid food caught on?' is the wordplay.
'liquid food' becomes 'soup' (I've seen this before).
'caught' becomes 'c' (cricket abbreviation).
'soup'+'c'+'on'='SOUPCON'
(Other definitions for soupcon that I've seen before include "suspicion" , "Tiny quantity" , "Hint" , "Dash" , "Small amount of food" .)