Black bean chilli

Name: Black bean chilli
Prep time: 10 min
Cook time: 30 min
Total time: 40 min
Cuisine: Mexican
Ingredients: 2 tbsp olive oil; 4 garlic cloves, finely chopped; 2 large onions, chopped; 3 tbsp sweet pimenton (Spanish paprika) or mild chilli powder; 3 tbsp ground cumin; 3 tbsp cider vinegar; 2 tbsp brown sugar; 2 x 400g (2 x 14oz) cans chopped tomatoes; 2 x 400g (2 x 14oz) cans black beans, rinsed and drained; a few, or one, of the following to serve: crumbled feta cheese, chopped spring onions, sliced radishes, avocado chunks, soured cream