Chinese way of serving up dessert biscuit (7)

I believe the answer is:

oatcake

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

'biscuit' is the definition.
(I've seen this before)

I don't understand the rest of the clue.

(Other definitions for oatcake that I've seen before include "Savoury biscuit" , "something like a biscuit" , "Traditional Scottish biscuit" , "Scots biscuit-like food" , "Dry biscuit" .)

I've seen this clue in The Irish Times.

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