Sort of bun Rachel's eagerly consumed (7)

I believe the answer is:

chelsea

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

'sort of bun' is the definition.
(I've seen this before)

'rachel's eagerly consumed' is the wordplay.
'CHELSEA' is hidden within the letters.
However, I am unsure how the hidden word is indicated.

Can you help me to learn more?

(Other definitions for chelsea that I've seen before include "Sort of bun" , "bun offered" , "W. London football club" , "Cheyne Walk neighbourhood?" , "Lace she found in London area" .)

I've seen this clue in The Telegraph.

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