Face contorted in small restaurant (4)
I believe the answer is:
cafe
'small restaurant' is the definition.
(I've seen this before)
'face contorted' is the wordplay.
'contorted' indicates an anagram.
'face' anagrammed gives 'CAFE'.
'in' is the link.
(Other definitions for cafe that I've seen before include "Greasy spoon" , "Small eating place" , "Alate" , "It's an eating house - face up to it" , "Place to eat" .)