Where one might eat ten diet shakes (7)
I believe the answer is:
dinette
'where one might eat' is the definition.
'ten diet shakes' is the wordplay.
'shakes' indicates an anagram.
'ten'+'diet'='tendiet'
'tendiet' is an anagram of 'DINETTE'.
(Other definitions for dinette that I've seen before include "Place to eat" , "somewhere to eat" , "meals alcove" , "Small room for eating" , "Eating alcove" .)