Crossword Genius

Regular contributors to main course, not starter and desserts (4)

Ross

I believe the answer is:

puds

I'm a little stuck... Click here to teach me more about this clue!

'desserts' is the definition.
(pud is a kind of dessert)

'regular contributors to main course not starter' is the wordplay.
I cannot really understand how this works, but
'course' could be 's' and 's' is present in the answer.
The remaining letters 'pud' is a valid word which might be clued in a way I don't understand.
This may be the basis of the clue (or it may be nonsense).

'and' is the link.

Can you help me to learn more?

I've seen this clue in The Guardian.
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