Mother and child making some jam (6)
I believe the answer is:
damson
'some jam' is the definition.
(damson is a type of jam)
'mother and child' is the wordplay.
'mother' becomes 'dam' (female parent of an animal).
'and' says to put letters next to each other.
'child' becomes 'son' (son is a kind of child).
'dam'+'son'='DAMSON'
'making' is the link.
(Other definitions for damson that I've seen before include "jam producer" , "Small stone-fruit for nomads" , "fruit tree" , "Stone fruit for nomads" , "Plum-coloured" .)