Crossword Genius

Tease us going back for sweetener (5)

Ross

I believe the answer is:

sugar

'sweetener' is the definition.
(sugar is a kind of sweetener)

'tease us going back' is the wordplay.
'tease' becomes 'rag' ('rag' can be a synonym of 'tease').
'going back' says the letters should be written in reverse.
'rag'+'us'='ragus'
'ragus' written backwards gives 'SUGAR'.

'for' is the link.

(Other definitions for sugar that I've seen before include "Mild oath (granulated?)" , "Make more palatable" , "Cane or beet sweet stuff" , "e.g. Glucose" , "White or brown sweetener" .)

I've seen this clue in The Telegraph.
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