Praise young children drinking something hot and milky (8)
I believe the answer is:
flattery
'praise' is the definition.
(flattery is a kind of praise)
'young children drinking something hot and milky' is the wordplay.
'young children' becomes 'fry' (fry can informally mean young children).
'drinking' is an insertion indicator.
'something hot and milky' becomes 'latte' (a latte is a milky coffee).
'fry' going around 'latte' is 'FLATTERY'.
(Other definitions for flattery that I've seen before include "Cosying up" , "Felt tray (anag.)" , "Sweet talk" , "Honeyed words" , "sugar?" .)