Slow cooker Bolognese - Good Food Middle East

Ingredients

• 4 tbsp olive oil
• 6 smoked baconrashers, chopped
• 1½ kg lean minced beef(or use half beef, half pork mince)
• 4 onions, finely chopped
• 3 carrots, finely chopped
• 4 celerysticks, finely chopped
• 8 garlic cloves, crushed
• 500g mushrooms, sliced
• 4 x 400g cans chopped tomatoes
• 6 tbsp tomato purée
• 2 tbsp dried mixed herbs
• 2 bay leaves
• large glass red wine(optional)
• 4 tbsp red wine vinegar
• 1 tbsp sugar
• cooked spaghetti, to serve
• parmesan, to serve