Slice the pumpkin into pieces about 0,5 centimeters thick. Chop the onion. Fry the pumpkin in the olive oil. Add the pumpkin oil, vinegar(balsamic), sea salt and pepper, dress the pumpkin with the oil mixture and let stand for an hour. Wash the corn salad, place on the plate, put sliced pumpkin on the top, crumble feta cheese and sprinkle with pumpkin seeds.