Way of cooking donuts with old jam (8)
I believe the answer is:
tandoori
'way of cooking' is the definition.
(style of Indian cooking)
'donuts with old jam' is the wordplay.
I cannot quite see how this works, but
'with' could be 'and' and 'and' is located in the answer.
'old' could be 'o' (common abbreviation eg in OE for Old English) and 'o' is located in the answer.
The remaining letters 'tori' 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).
Can you help me to learn more?
(Other definitions for tandoori that I've seen before include "Clay oven cooking style" , "Indian-style cooking" , "Type of restaurant" , "Cooked in an Indian clay oven" , "Food cooked Indian-style in clay oven" .)