Food cooked by the cowherd (7)

I believe the answer is:

chowder

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'food' is the definition.
(chowder is a kind of food)

'cooked by the cowherd' is the wordplay.
'cowherd' anagrams to 'CHOWDER'.
But, I'm not clear how this is indicated.

Can you help me to learn more?

(Other definitions for chowder that I've seen before include "Thick fish stew" , "Thick seafood soup" , "possible first course?" , "Thick soup containing clams or fish" , "Rich seafood soup" .)

I've seen this clue in the Evening Standard.

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