Fill the bottom of a heavy skillet with about 3/4 inch frying oil and heat it over medium-high heat until a little flour dropped in sizzles and bubbles. Carefully place the breaded green tomato slices into the oil. Fry the slices, rotate and flip them, until both sides are golden brown. When done, remove each slice and place on paper towels to soak up excess oil. Serve with salsa.