Started with cake (4)
I believe the answer is:
tart
'cake' is the definition.
The definition and answer can be both things that one consumes for nourishment as well as being singular nouns.
Maybe you can see a link between them that I don't see?
'started with' is the wordplay.
'with' indicates the answer is hidden within the clue.
'TART' is hidden within 'started'.
Can you help me to learn more?
(Other definitions for tart that I've seen before include "See 10" , "Astringent" , "Tasting sour like a lemon" , "Bitter - pudding" , "Pie with fruit filling" .)