Pub outside Totnes regularly provides buffet (6)
I believe the answer is:
batter
'buffet' is the definition.
(buffet can mean to hit or batter)
'pub outside totnes regularly' is the wordplay.
'pub' becomes 'bar' (both are drinking establishments).
'outside' indicates putting letters inside.
'regularly' indicates alternate letters (regularly take one letter, leave next etc.).
The alternate letters of 'totnes' are 'tte'.
'bar' enclosing 'tte' is 'BATTER'.
'provides' is the link.
(Other definitions for batter that I've seen before include "Strike repeatedly; cricketer" , "Cooking mix of flours, eggs and milk" , "Beat the cooking mixture" , "Beat the flour and liquid" , "Flour and egg coating" .)