Black Bean Soup with Soured Cream Recipe

Never has a soup taken me so long to prepare. The black beans have to be soaked for at least 10 hours, and while we never have a cool enough temperature in Tenerife for soup, I do make exceptions. This thick, healthy and wholesome bowl makes a very satisfying lunch.
Preparation Time: 30 min
Cooking Time: 1 hour 10 min
Serves: 4 

300g dried black beans soaked overnight in cold water, or tinned black/jarred beans to save on time
2 tbsp olive oil
1 onion, chopped
3 garlic cloves, crushed
1/4 tsp crushed dried chilli
2 tsp ground cumin
1 tsp ground coriander
1-litre vegetable or chicken stock
Juice of 2 limes
Salt and ground black pepper
5 tbsp soured cream
Chopped fresh coriander to garnish

1. Drain the beans and put in a large saucepan.  Pour in boiling water to cover the beans generously and boil rapidly for 10 minutes.  Reduce the heat and simmer for 1 hour, until the beans are tender. Drain the water and put to one side.

2. Heat the oil in a saucepan and add the onion and garlic.  Cook gently for 5 minutes. Stir in the chilli, cumin and coriander. Add the beans and stock.  Bring to the boil. Reduce the heat and simmer for 10 minutes.

3.  Pour the soup into a blender and blitz until smooth.  Stir in the lime juice, salt and pepper.  Ladle the soup into bowls, topped with the sour cream and garnish with the chopped coriander.