David Rosengarten, the popular television personality, cookbook author and publisher of the Rosengarten Report, will headline the chef demonstrations and tastings at the 13th annual Grand Central Oyster Frenzy on Saturday afternoon, September 26th, at the historic Grand Central Oyster Bar & Restaurant in New York City.
The “Frenzy” gets underway at 12:00 noon, and at 1:50 pm, Rosengarten will concoct his version of the classic Oysters Bienville, made with Watch Hill oysters, and accompanied by Rosengarten White Wine. Admission is free, and the public gets to taste David’s recipe.
Make the béchamel sauce base: In a small saucepan, warm the milk over medium heat and bring almost to a boil, watching it carefully so that it doesn't boil over. Remove from the heat and reserve. Meanwhile, place another small saucepan over medium heat and add 2 tablespoons of the butter. When it has melted and the foam begins to subside, sprinkle in the flour, stir the mixture to blend, and immediately turn the heat down to medium-low. Continue stirring while the mixture bubbles for two minutes. Gradually whisk in the reserved warm milk, raise the heat to medium-high and bring to a boil, whisking continuously. Reduce to a bare simmer and add the nutmeg, a generous pinch of salt and cook, stirring regularly, for 15 minutes. The sauce should be very thick, but still pourable. Whisk in a small quantity of milk if you think it needs thinning. Pass the mixture through a fine-meshed sieve into a small bowl and set aside.
Melt the remaining 4 tablespoons of butter in a large sauté pan over medium heat. Add the green pepper, scallions and garlic, and cook gently for 5 minutes. Do not let them brown. Add the white wine, raise the heat to medium-high and allow it to reduce by half. Add the pimientos, American cheese, breadcrumbs, cayenne, a few grindings of black pepper, a pinch of salt and the reserved béchamel sauce, stirring to incorporate the mixture well. Reduce the heat to medium-low and let the sauce gently simmer for 10 minutes, stirring occasionally. When finished, it should be almost, but not quite, the consistency of mayonnaise. Taste the sauce for salt. Transfer the sauce to a small bowl and set aside. The sauce can be made up to 2 days ahead and stored in an airtight container in the refrigerator.
Divide 1 1/2 pounds of the rock salt between four dinner plates, each large enough to hold six oysters. Distribute the salt evenly on each plate. This is simply to provide an attractive base on which the curved oyster shells can evenly rest. Test with one oyster, placing the more deeply curved shell side down. If you need more salt to support the shells, add it. Set the plates aside. Now divide the remaining salt between two roasting pans, each large enough to hold a dozen oysters in one layer. Distribute the salt as you did for the plates (if you run out of salt, you can also use dried beans or lightly crumpled tinfoil on the baking sheets).
Open the top, flat side of each oyster (the deeply curved shell should be on the bottom.) Retain in each shell as much of the oyster liquor as possible. Discard the top shell, and free each oyster from its muscle. Transfer each oyster in its bottom shell to the salt-lined baking sheets.
Arrange the oven racks to accommodate both baking sheets, and preheat the oven to 400 degrees.
Place 2 teaspoons of the bechamel mixture on top of each oyster if they are medium-sized (a bit more if they are larger, a bit less if they are smaller). The mixture should almost, but not quite, cover the meat of the oyster. Place the baking sheets with the oysters in the oven and cook until there is a lively bubbling at the edges of the oysters, about 20 minutes. If your oven has hot spots, rotate the pans 180 degrees after 10 minutes. (And if your 2 roasting pans are on different levels, after 10 minutes carefully reverse the bottom and top baking pans to ensure even cooking.) When the oysters are done, allow them to cool for 2 minutes and, wearing rubber gloves or with the help of a large spoon, carefully transfer 6 oysters to each of the salt-lined dinner plates. Garnish each plate with a lemon wedge and serve immediately.