Cook sent in more soup (10)
I believe the answer is:
minestrone
'soup' is the definition.
(minestrone is a kind of soup)
'cook sent in more' is the wordplay.
'cook' indicates anagramming the letters.
'sent'+'in'+'more'='sentinmore'
'sentinmore' anagrammed gives 'MINESTRONE'.
(Other definitions for minestrone that I've seen before include "F" , "Item on menu" , "A starter" , "liquid mixture" , "Dish" .)