Lamb Hotpot Pie

lamb shoulders 42.0% , potato 25.0% , wheat flour 13.3% , Theakston Old Peculier™ Ale 8.4% , unsalted butter 5.4% , onion 2.9% , carrot 1.5% , celery 0.7% , rapeseed oil 0.4% , Roast Lamb Stock 0.2% , egg 0.1% , Lamb fat 0.0% , salt 0.0% , garlic puree 0.0% , mint 0.0% , thyme 0.0% , white wine vinegar 0.0% , barley malt vinegar 0.0% , molasses 0.0% , cracked black pepper 0.0% , spice 0.0% , tamarind 0.0% , dehydrated onion 0.0% , dried garlic 0.0%