Having treat in Gujarati’s house (6)
I believe the answer is:
eating
'having' is the definition.
(eating is a kind of having)
'treat in gujarati's house' is the wordplay.
'house' indicates the answer is hidden within the clue (I've seen 'houses' mean this (part of the clue houses the answer)).
'EATING' is hidden in the letters of 'treat in gujarati'.
(Other definitions for eating that I've seen before include "Out to dinner?" , "Consuming food" , "Having supper?" , "Ingestion" , "Taking in solid food" .)