In a large bowl, whisk together the flour, baking powder, salt, pepper, seltzer water, and eggs to create a smooth batter. Throw around 12 beans in the batter and, with your hands, shake-off any loose batter and drop them in the oil. Fry until golden brown, about 4 minutes. With a slotted spoon, transfer beans to paper towels, salt lightly, and then put them on the rack in the oven to keep warm. Do process again until done, making sure the oil is at temperature before frying the next batch. Serve warm with some Yogurt Dip on the side.