Take out of the freezer food initially stored badly (7)
I believe the answer is:
defrost
'take out of the freezer food initially stored badly' is the definition.
I can't tell whether this definition defines the answer.
'food initially stored badly' is the wordplay.
'initially' says to take the initial letters.
'badly' indicates anagramming the letters (letters in the wrong order).
The initial letter of 'food' is 'f'.
'f'+'stored'='fstored'
'fstored' anagrammed gives 'DEFROST'.
Can you help me to learn more?
(Other definitions for defrost that I've seen before include "Thaw (frozen food)" , "Make free of ice" .)