Seafood and beef mentioned in conversation (6)
I believe the answer is:
mussel
'seafood' is the definition.
(I know that mussel is a type of seafood)
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for mussel that I've seen before include "The shellfish sounds strong" , "Seafood item" , "Black marine bivalves" , "Pearl may come from it" , "Edible shellfish" .)