Preparation

• Position a rack in the lower third of the oven and heat the oven to 450°F. In a medium bowl, whisk together the milk, eggs, and 1/2 tsp. salt until smooth. Whisk in the flour just until incorporated; the batter will be lumpy. pour the fat into a metal 9×13-inch baking pan and put the pan in the oven until hot, about 5 minutes.
• Remove the pan from the oven and pour the batter into the hot fat. Bake until puffed and browned, about 20 minutes. Serve immediately.