The size of this beef and pork mince potato topped pie is enough to want to challenge people to eat it in one sitting. There’s easily enough here for two ravenous adults, or a family meal, with accoutrements. An oven is needed for this puppy. Refrigerate overnight and then pop in a preheated 190C oven, uncovered for 40 mins. Sprinkle with grated cheese in the last five mins of cooking for a coup de grace.