Young girl beginning to deliver cooked meals (6)
I believe the answer is:
damsel
'young girl' is the definition.
(I've seen this before)
'beginning to deliver cooked meals' is the wordplay.
'beginning to' suggests taking the first letters.
'cooked' indicates anagramming the letters.
The first letter of 'deliver' is 'd'.
'meals' is an anagram of 'amsel'.
'd'+'amsel'='DAMSEL'
(Other definitions for damsel that I've seen before include "Girl - type of fly" , "Young girl" , "Young single woman" , "An old girl, often in distress" , "little fly" .)