In a small bowl, WHISK egg and buttermilk.
STIR together cornmeal, flour, salt, and pepper.
DIP tomato slices in egg mixture, and then DREDGE in cornmeal mixture; SHAKE off excess.
In a large skillet, HEAT oil to 350 F; FRY tomato slices, in batches, in hot oil one minute on each side.
DRAIN and SERVE.
Per Serving (excluding unknown items): 708 Calories; 57g Fat (71.3% calories from fat); 9g Protein; 43g Carbohydrate; 4g Dietary Fiber; 54mg Cholesterol; 607mg Sodium. Exchanges: 2 Grain(Starch); 0 Lean Meat; 2 Vegetable; 0 Non-Fat Milk; 11 Fat.