Slow Cooked Steak Pie

beef 27.0% , butter 36.5% , onion 18.3% , smoked bacon 4.0% , IPork 7.1% , sea salt 3.6% , sugar 1.8% , Preservative 0.9% , Antioxidant 0.4% , i 0.2% , mushroom 3.5% , red wine 0.0% , carrot 0.0% , yeast extract 0.0% , Beef Dripping 0.0% , egg 0.0% , molasses 0.0% , black pepper 0.0% , garlic puree 0.0% , caramelised sugar 0.0% , white wine vinegar 0.0% , Dark Brown Soft Sugar 0.0% , thyme 0.0% , beef fat 0.0% , demerara sugar 0.0% , rapeseed oil 0.0% , tomato concentrate 0.0% , beef extract 0.0%