Cook too little, out before party (7)
I believe the answer is:
underdo
'cook too little' is the definition.
I can't tell whether this definition defines the answer.
'out before party' is the wordplay.
'out' becomes 'under' (I've seen this in another clue).
'before' is a charade indicator (letters next to each other).
'party' becomes 'do' (do is a kind of party).
'under'+'do'='UNDERDO'
Can you help me to learn more?
(Other definitions for underdo that I've seen before include "Cook for short time" , "half-baked" , "Cook too briefly" , "Be responsible for rare product" , "Rarely cook" .)