Pamper small group attached to cook, oddly (6)
I believe the answer is:
cosset
'pamper' is the definition.
('cosset' can be a synonym of 'pamper')
'small group attached to cook oddly' is the wordplay.
'small' becomes 's' (abbreviation - e.g. clothes size).
'group' becomes 'set' (set is a kind of group**).
'attached to' is a charade indicator (letters next to each other).
'oddly' indicates alternate letters.
The alternate letters of 'cook' are 'co'.
's'+'set'='sset'
'sset' after 'co' is 'COSSET'.
(Other definitions for cosset that I've seen before include "Pamper and spoil" , "Protect overindulgently" , "Baby" , "Nanny" , "Treat indulgently, pamper" .)