Potato & Onion Pierogies

water 53.3% , wheat flour 23.3% , E375 11.7% , iron 5.8% , thiamin 2.9% , ribgplavin 1.5% , folic acid 0.7% , potato flakes 0.4% , onion 0.2% , soya oil 0.1% , salt cranilated onion 0.0% , egg 0.0% , contairs wheat 0.0% , soya 0.0% , egg 0.0%