To prepare a steamed ancient egg diamonds appetizers recipe, you'll first need to prepare the ingredients. You will need: 1 pound (450 g) raw egg whites, 1 cup (240 ml) kosher salt, and 1 teaspoon (2.5 tsp) freshly ground black pepper. Heat the oil over medium-high heat. Add the eggs and cook, stirring, until the yolks are set, about 5 minutes. Remove from the heat and set aside to cool. Cut the egg into 12 inch (1.3 cm) thick slices. Place the slices in the bottom of an 8 x 8-inch baking dish. Pour the melted butter over the butter and stir to coat the pieces. Bake for 20 to 25 minutes, or until golden brown. Serve warm or at room temperature.