Sausage stroganoff

Ingredients

• 2 dashes olive oil
• 4-6 pork sausages (gluten-free if you need them to be)
• 30g butter
• 1 onion, sliced
• 3 garlic cloves, sliced
• 150g chestnut mushrooms, sliced
• 1 tsp tomato pureé
• 1 tsp Dijon mustard
• 1/2 tbsp smoked paprika
• 125ml white wine or brandy
• 250ml chicken stock
• 2 tbsp soured cream
• Handful parsley, dill and/or tarragon leaves, chopped
• Cooked rice, potatoes or bread to serve