Coop Corned Beef Hash

ingredients roasted diced potatoes 29.0% , onion 22.0% , corned beef 21.0% , potato 20.0% , water 4.4% , corn flour 1.8% , worcestershire sauce 0.9% , Tomato ketchup 0.5% , tomato 0.2% , butter 0.1% , beef broth 0.1% , tomato purée 0.0% , dijon mustard 0.0% , rapeseed oil 0.0% , black pepper 0.0%