Mussels

What is it?

Frozen in their shells and ready to cook from the freezer, these shellfish just need steaming or heating until the shells open, then serving with the liquor in the pack. The format is simple here, with just the shellfish and no added sauce, so it sits closer to plain frozen seafood than to a finished meal. Compare it with the brand's fish fingers or breaded fillets, and you're in a very different lane. Each shell opens as it heats, releasing briny liquor that works as a natural cooking liquid. Toss them with garlic, white wine and parsley for a classic preparation, or stir them through pasta with chilli and olive oil. They cook quickly from frozen, usually in under ten minutes, making them one of the faster seafood options in the freezer aisle.