Wobbly food (5)
I believe the answer is:
jelly
'wobbly food' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for jelly that I've seen before include "Semi-solid dessert" , "It wobbles" , "Wobbly pudding" , "Gelatinous food" , "Wobbly dessert" .)