Thicken stew in cook's place (7)
I believe the answer is:
kitchen
'cook's place' is the definition.
(I've seen this in another clue)
'thicken stew' is the wordplay.
'stew' indicates anagramming the letters.
'thicken' with letters rearranged gives 'KITCHEN'.
'in' acts as a link.
(Other definitions for kitchen that I've seen before include "Room for preparing meals" , "Area for preparing meals" , "Cooking area" , "Place for cooking food" , "Galley" .)