1 avocado, sliced
1 Scotch bonnet or other chilli, seeds removed, chopped
2 tbsp finely chopped fresh coriander
iceberg lettuce, shredded
2 ripe plantains
1 red onion, finely chopped
1 large tomato, thickly sliced
400g tin black beans, drained and rinsed
sweet chilli sauce
250g/9oz plain flour
1 tsp freshly ground black pepper
1 tsp dried mixed herbs
2 tbsp olive oil
1 tsp sea salt flakes
4 vegan burger buns, split