One-pot chilli

Ingredients

• 1 tbsp sunflower oil
• 1 large red onion, chopped
• 1 celery stick, chopped
• 4 garlic cloves, chopped
• 1 tsp cayenne pepper
• 1 tsp cumin seeds
• 1 tbsp smoked paprika
• 1kg good minced beef
• 400g can aduki beans, drained
• 400g can pinto or borlotti beans, drained
• 400g can chopped tomatoes
• 600ml chicken or beef stock
• 2 squares dark chocolate (we like Green & Black’s Maya Gold)
• 450g cooked long-grain rice,
• 50g salted tortilla chips and
• A large handful grated mature cheddar, to serve