Instant food prepared to eat in (6)
I believe the answer is:
modish
'in' is the definition.
(I've seen this before)
'instant food' is the wordplay.
'instant' becomes 'mo'.
'food' becomes 'dish' (dish is a kind of food**).
'mo'+'dish'='MODISH'
'prepared to eat' is the link.
I am not very happy about this link. Some or all of it may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for modish that I've seen before include "in the latest fashion?" , "I'm shod in the current fashion" , "In vogue or fashion" , "In fashion or style" , "Fashionable, in style" .)