Mare too wild for a cafe (7)
I believe the answer is:
tearoom
'a cafe' is the definition.
(tearoom is a type of cafe)
'mare too wild' is the wordplay.
'wild' indicates anagramming the letters.
'mare'+'too'='maretoo'
'maretoo' is an anagram of 'TEAROOM'.
'for' acts as a link.
(Other definitions for tearoom that I've seen before include "Restaurant for light meals" , "Small restaurant" , "24" , "Cafeteria" , "Where light refreshments are served" .)