Dates and marmalade spread over nougat -- originally plum (6)

I believe the answer is:

damson

'plum' is the definition.
(damson is a kind of plum)

'dates and marmalade spread over nougat originally' is the wordplay.
'originally' indicates taking the first letters.
The initial letters of 'dates and marmalade spread over nougat' is 'DAMSON'.

(Other definitions for damson that I've seen before include "Small tart plum" , "Small plum-like fruit" , "Nomads (anag)" , "Acid purple plum" , "Wild plum" .)

I've seen this clue in The Telegraph.

Want a hint initially instead of a full solution? Install my app