Dish Al's cooked today (5)
I believe the answer is:
salad
'dish' is the definition.
(type of meal or dish)
'al's cooked today' is the wordplay.
'cooked' indicates an anagram (letters cooked into a new form).
'today' becomes 'ad' (I can't explain this - if you can you should believe this answer much more).
'als' is an anagram of 'sal'.
'sal'+'ad'='SALAD'
Can you help me to learn more?
(Other definitions for salad that I've seen before include "Cold dish of veg and herbs" , "Raw greens, mainly" , "A cold meal with lots of lettuce" , "Cold vegetable dish" , "Food dish" .)