The Gulf oyster is the most important single shellfish in Louisiana cuisine — present in gumbo, in po'boys, in Rockefeller, in bisque, in dressing, on the raw bar, and chargrilled at Drago's. The Louisiana oyster tradition is vast enough that individual preparations have their own entries (Rockefeller at LA2-02, po'boy at LA2-03), but the oyster itself — the culture of oystering, the raw bar tradition, the chargrilled phenomenon, the specific character of the Gulf oyster — deserves its own entry as a foundation of Louisiana food.
Gulf oysters (*Crassostrea virginica*) from the coastal waters of Louisiana — harvested from Plaquemines Parish, Grand Isle, and the brackish bays and bayous of the coast — are larger, plumper, and milder in salinity than Atlantic or Pacific oysters. Their flavour is sweet, briny, mineral, and clean, with a creamy texture when raw. The mildness of Gulf oysters makes them ideal for cooking (they don't turn overwhelmingly briny when heated the way cold-water oysters can), but it also makes them superb raw — especially in the winter months (September through April) when the water is cold and the oysters are at their fattest and firmest.
Raw: on ice, lemon, cocktail sauce, saltines, cold beer or dry white wine. Chargrilled: French bread for the garlic butter, cold beer. Fried: on a po'boy, dressed, Crystal hot sauce. En brochette: as a first course, with remoulade (LA2-15). The oyster adapts to every context in Louisiana cuisine.
1) Raw bar: Gulf oysters on the half shell, on ice, with lemon wedges, cocktail sauce (ketchup, horseradish, lemon), and saltine crackers. The New Orleans raw bar is not the precious, single-origin oyster tasting of the East Coast — it is generous, casual, and consumed by the dozen. Raw bars in New Orleans shuck at speed; a good shucker opens 300-400 oysters per hour. 2) Chargrilled oysters — Drago's Seafood Restaurant and Oyster Bar created this technique in the 1990s: oysters on the half shell placed on a hot grill, topped with garlic butter, Parmesan, and herbs, cooked until the butter bubbles and the oyster edges curl. The butter drips into the fire, producing a flame and smoke that flavours the oyster. This technique has spread to virtually every seafood restaurant in Louisiana and many beyond. 3) Fried oysters — cornmeal-battered, deep-fried, on a po'boy or on a plate. The oyster should be plump and barely set at the centre, the cornmeal coating golden and crunchy. Overcooking produces a shrunken, rubbery oyster inside a massive shell of coating. 4) Oysters in cooking — stirred into gumbo in the last 5 minutes; folded into dressing before baking; poached in cream for oyster stew; wrapped in bacon for en brochette (on a skewer, broiled). The Gulf oyster's mild flavour makes it adaptable to virtually any cooking method.
The New Orleans oyster bar tradition: sit at the bar, watch the shucker work, eat oysters as they're opened. The conversation, the speed of the shucker, the saltines, the cold beer — the experience is as important as the oysters themselves. Oysters en brochette: oysters wrapped in bacon, skewered, dipped in seasoned flour, and deep-fried or broiled. The bacon's smoke and salt against the oyster's brine and cream is one of the finest appetisers in New Orleans. Gulf oysters are seasonal in quality though available year-round. The cold-water months (November through March) produce the fattest, firmest, best-flavoured oysters. Summer oysters are thinner, milkier (spawning), and less flavourful. The "R months" rule (only eat oysters in months containing the letter R) is an approximation of this seasonal quality cycle.
Overcooking in any application — Gulf oysters overcook in seconds. Whether chargrilling, frying, or adding to gumbo, the oyster needs only enough heat to just set the edges. The centre should remain creamy and barely warm. Serving raw oysters on a warm day without adequate ice — the oysters warm, the texture softens, and food safety risk increases. The ice must be substantial and the oysters consumed within minutes of shucking. Drowning raw oysters in cocktail sauce — the sauce should complement, not mask. A small amount of cocktail sauce or a squeeze of lemon should enhance the oyster's own flavour.
John Folse — Encyclopedia of Cajun & Creole Cuisine; Tom Fitzmorris — New Orleans Food; Sara Roahen — Gumbo Tales