Dish is part of lunch I'll ignore (6)
I believe the answer is:
chilli
'dish' is the definition.
(I've seen this before)
'part of lunch i'll ignore' is the wordplay.
'part of' says the answer is hidden in the clue.
'CHILLI' can be found hidden inside 'lunch ill ignore'.
'is' acts as a link.
(Other definitions for chilli that I've seen before include "Pungent pod" , "Hot-tasting red pepper used as relish" , "Hot food (that sounds cold!)" , "Hot stuff (though it sounds cold)" , "Hot capsicum pod" .)