Aquaculture techniques produce more uniform oysters, allowing growers to charge more for them on the half-shell market.

WSJ: Planting Seeds for a Better Oyster Harvest

Tiny scallops, also cooked on the half-shell, are a revelation: sweet and soft, bathed in oil and garlic with flecks of parsley.

BBC: A culinary pilgrimage along the Way of St James

To assemble your tart, spread the mustard cream over the center of the shell and sprinkle half the cheese on top.

WSJ: Martin Picard's Sun-Dried Tomato and Onion Tart | Slow Food Fast