Pour buttermilk into a lg shallow bowl. Add onion rings. Soak 30 mins. In another lg shallow bowl, combine flour, water, baking powder, salt, egg, 1 tbsp oil, lemon juice and cayenne pepper.
Stir until smooth. In skillet, heat 1/2" oil on med-high. Remove onion rings from buttermilk bath. Dip each ring into flour mix. Place rings in oil, in batches. Fry, turning once until golden brown. Drain on paper towels.
What is Thanksgiving without the mashed potatoes, cranberries, green bean casserole or corn? Just plain-old-boring turkey. Here are 15 Thanksgiving side dishes you need to have on your Thanksgiving table...