Jam from mother and boy: something said to make you smile (6,6)
I believe the answer is:
damson cheese
'jam' is the definition.
'mother and boy something said to make you smile' is the wordplay.
'mother' becomes 'dam' (female parent of an animal).
'and' means one lot of letters go next to another.
'boy' becomes 'son' ('son' can be a synonym of 'boy').
'something said to make you smile' becomes 'cheese' (ref to saying 'cheese' in photographs**).
'dam'+'son'+'cheese'='DAMSON CHEESE'
'from' is the link.
(Another definition for damson cheese that I've seen is " One sad scheme (anag) - thick preserve".)