Mince and Herby Dumplings

Ingredients

• 2 tbsp vegetable oil
• 1 large onion, thinly sliced
• 2 garlic cloves, finely chopped
• 2 celery sticks, finely sliced
• 2 carrots, diced
• 500g beef mince
• 400g can of chopped tomatoes
• 2 tbsp tomato purée
• 450ml beef stock
• pinch of caster sugar
• 1 bay leaf
• sea salt
• black pepper
• 250g self-raising flour
• 125g beef suet, shredded
• ½ tsp fine sea salt
• 2 tbsp finely chopped fresh parsley
• 1 tsp finely chopped rosemary
• 1 tsp finely chopped thyme