Black bean soup recipe

Ingredients

• 2 tbsp olive oil
• 2 red onions, finely chopped
• 4 garlic cloves, chopped
• 1 fresh green chilli, deseeded if you prefer and finely chopped
• 1 chipotle chilli, finely chopped
• 1 tsp dried oregano
• 2 tsp ground cumin
• 2 tsp ground coriander
• 1 tsp ground allspice
• 1/2 red pepper, deseeded and finely chopped
• 2 celery sticks, finely chopped
• 500 g dried black kidney beans, soaked and cooked or 800g drained tinned beans
• 1 tbsp tomato puree
• 1 l vegetable stock
• 30 g dark chocolate, finely chopped
• 1 good pinch of salt
• 3 tbsp soured cream to serve
• 1 avocado, peeled stoned and diced
• 2 spring onions, finely chopped
• 1 tbsp chopped fresh coriander
• 1 lime, juiced