Cabbage or soya product around mid-Devon (5)

I believe the answer is:

savoy

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'cabbage' is the definition.
(I know that savoy is a type of head cabbage)

I cannot understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for savoy that I've seen before include "Cabbage; hotel" , "A cabbage; some Operas" , "area of France" , "Dense cabbage" , "Type of cabbage - London theatre" .)

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