Bunch in Society very much enthralled by food (7)
I believe the answer is:
tussock
'bunch' is the definition.
(I know that tussock is a type of bunch)
'society very much enthralled by food' is the wordplay.
'society' becomes 's' (common abbreviation in names of organisations).
'very much' becomes 'so' (so can mean very much or extremely).
'enthralled by' means one lot of letters goes inside another ('enthral' can mean 'capture').
'food' becomes 'tuck' (tuck can mean food).
's'+'so'='sso'
'sso' going inside 'tuck' is 'TUSSOCK'.
'in' is the link.
(Other definitions for tussock that I've seen before include "(Of grass) cut" , "Clump of hair" , "Tuft of grass" , "mound" , "Grassy clump" .)