Grown in: Totten Inlet, Puget Sound, Washington
Taste: "A light brine with a citrusy metallic finish. It has a taste all its own," says Daffin. "No other oyster can be compared to it."
Why they're special: The only true native West Coast oyster, Olympias once ranged from Alaska down to Southern California, but pollution and overharvesting depleted them to near extinction by the 1930s. Now recovered, they remain rare and difficult to farm: As even the adults are not much larger than a bottle cap, the oysters must still be harvested by hand at low tide.
Order from: Taylor Shellfish Farms [$7.50 per dozen; taylorshellfishfarms.com]