In a large bowl, combine the cornmeal, flour, baking powder and salt. In another bowl, beat the eggs, milk, jalapenos, onion and hot sauce. Stir into dry ingredients just until combined., In a cast-iron or other heavy skillet, heat oil to 375°. Drop tablespoons of batter, a few at a time, into hot oil. Fry until golden brown on both sides. Drain on paper towels. Serve warm.