Reserve 1/4 cup drippings in roasting pan. (Or, pour 2 tablespoons drippings into each of two 8×1-1/2-inch round baking pans.) Set aside. Set oven temperature to 400 degrees. Beat eggs on low speed of electric mixer for 1/2 minute. Add milk; beat 15 seconds. Add flour and the 1 teaspoon salt; beat 2 minutes or till smooth. Pour batter over drippings in pan(s). Bake in a 400 degree oven about 35 to 40 minutes for roasting pan or about 30 to 35 minutes for round baking pans. Cut into squares or wedges to serve. Serve at once with roast.