Faggots & Onion Gravy

Ingredients

• 25 g (1oz) unsalted butter
• 1 medium onion, peeled and finely chopped
• 175 g (6oz) minced pigs liver
• 2 lamb or pigs heart, trimmed and cut into chunks
• 1/2 tsp mace
• 4 tbsp freshly chopped chives
• 1 tsp freshly chopped sage
• 1 egg, beaten
• salt and freshly ground pepper
• 115 g (4oz) fresh white bread crumbs
• 25 g (1 oz) beef dripping or 3 tbsp olive oil
• 4 red onions, peeled and each onion cut into 8 wedges
• 4 sprigs of fresh thyme
• 1 tbsp olive oil
• 900 ml (1-1/2pt) fresh beef stock
• 290 ml (1/2 pint) red wine
• salt and freshly ground black pepper
• 450 g (1lb) belly of pork, trimmed and rind removed.