Wrong and bad, a Spanish dish (8)
I believe the answer is:
tortilla
'spanish dish' is the definition.
'tortilla' can be an answer for 'dish' (I have seen 'Mexican dish' mean 'tortilla' so perhaps 'dish' could also mean 'tortilla'). I am not sure about the 'spanish' bit.
'wrong and bad a' is the wordplay.
'wrong' becomes 'tort' (legal term).
'and' means one lot of letters go next to another.
'bad' becomes 'ill' ('ill' can be similar in meaning to 'bad').
'tort'+'ill'+'a'='TORTILLA'
Can you help me to learn more?
(Other definitions for tortilla that I've seen before include "hot meal?" , "In which one may see salsa" , "Mexican corn meal pancake" , "Round flat Mexican cake" , "Littoral (anag.)" .)