Pork pie

INGREDIENTS

• 665g pork belly , half chopped into 5mm cubes, half minced or finely chopped
• 165g smoked bacon , chopped into 5mm cubes
• 1kg pork shoulder , minced
• ½ tsp ground mace
• sage leaves, finely chopped to make 1 tbsp
• 1 tsp thyme leaves
• 200g lard , plus extra for the tin
• 575g plain flour
• 300ml chicken stock
• 6 leaves gelatine
• 1 egg yolk , beaten, for glazing