Seafood molluscs (7)

I believe the answer is:

cockles

(Other definitions for cockles that I've seen before include "seafood" , "In song, Molly Malone used to sell these and mussels" , "Molluscs" , "Edible shellfish" .)

I've seen this clue in The Times.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.