cheese & onion quiche

milk 40.0% , wheat flour 25.0% , free range eggs 20.0% , Sautéed Onion 10.0% , extra mature cheddar 2.5% , red leicester 1.3% , palm oil 0.6% , onion 0.3% , double cream 0.2% , single cream 0.1% , corn flour 0.0% , rapeseed oil 0.0% , skimmed milk powder 0.0% , chives 0.0% , free range eggs 0.0% , salt 0.0% , white pepper 0.0% , black pepper 0.0% , nutmeg 0.0%