Cook laughs about duck stew (7)
I believe the answer is:
goulash
'stew' is the definition.
(I know that goulash is a type of stew)
'cook laughs about duck' is the wordplay.
'cook' indicates an anagram.
'about' means one lot of letters goes inside another.
'duck' becomes 'o' (resembles zero - 'duck' in cricket).
'laughs' with letters rearranged gives 'gulash'.
'gulash' going around 'o' is 'GOULASH'.
(Other definitions for goulash that I've seen before include "Hungarian meat and vegetable stew, with paprika" , "Spicy Hungarian stew" , "food" , "Hungarian dish" , "Hungarian stew of meat and veg with seasoning" .)