Mixed

1 tbsp olive oil 2 large onion, sliced 4 cloves garlic, minced 200 g mushrooms, quartered 2 bell peppers, chopped 2 sticks celery, halved and sliced 2 tins tomatoes 2 tins mixed beans 1 tsp chilli powder 1 tsp ground cumin 1 tbsp smoked paprika 1 tbsp mixed herbs 1 tbsp tomato purée 1 tsp