Heat oven to 350 degrees. Grease and flour a 9-by-13-inch pan. Combine flour, sugar, cocoa, baking soda, baking powder and salt in a large bowl. Add eggs, coffee, milk, oil and vanilla. Beat two minutes (batter will be thin). Pour into pan and bake 30 to 35 minutes, until a toothpick comes out clean.
Nutritional information per serving: 256 calories (38 percent from fat), 11 g fat (2 g saturated, 3 g monounsaturated), 37 mg cholesterol, 5 g protein, 35 g carbohydrates, 2 g fiber, 468 mg sodium.