Sausage ragù recipe

Ingredients

• 4 tbsp olive oil, plus a nice glug for serving
• 6 brown or red onions, halved and thinly sliced
• 4 cloves garlic, minced
• 2 bay leaves
• 1 sprig of thyme
• 1 sprig of rosemary
• 10 napoli sausages or any other coarse pork and fennel sausages
• 200 ml red wine
• 2 x 400g/14oz tinned whole plum tomatoes, blitzed or mashed
• 100 g Parmesan, grated
• 1 pinch each of salt and pepper