Oysters

Let's talk about the oyster, that closed stone that somehow holds the sea inside.

An oyster is a filter feeder. It pumps seawater through itself all day, catching plankton, then lets that water go again. When you take it from the water, it seals its shell shut and holds a little seawater inside — its liquor. That's the mechanism: you're not eating a piece of meat, you're eating the animal together with a mouthful of its own sea. This is why an oyster must be alive when you shuck it. A good one holds its liquor tight, the shell shut, full and solid in the hand, heavy for its size. Smell it and you get clean brine, nothing more. If it smells of anything else, walk away.

Some people say a wide-open oyster is just resting, relaxed, fine to eat. No! A live oyster may gape a little, but tap the shell and it should close. If it doesn't close, the muscle has let go and the animal is dead, and dead shellfish spoil fast. That belief leads straight to food poisoning — cooks shucking oysters that stopped breathing hours ago, trusting the shell instead of trusting the tap and the grip of the muscle inside.