Black Bean Burgers - Cooking like a Boss

3 red onion

8 soft rolls	sliced	spread on both sides						layer
8 tablespoons 0.12 l 120 ml 24 tsp 0.507 cup 0.211 pint natural yoghurt
¹⁄₂ of the salsa
2 mango	destone and finely slice
2 avocado	destone and finely slice
8 sprigs of fresh coriander
burgers
preheat oven to 200*c						roast for 25 minutes	add then keep in oven for 5 more minutes
2 red onion	blend until fine	pulse	shape into 8 burgers	rub all over	dust
400 g ²⁄₅ kg 0.882 lb 14.1 oz mixed mushrooms
200 g ¹⁄₅ kg 0.441 lb 7.05 oz rye bread
2 teaspoon 0.01 l 10 ml ²⁄₃ tbsp 0.042 cup 0.018 pint ground coriander
800 g ⁴⁄₅ kg 1.76 lb 28.2 oz tin of black beans	drain
salt
pepper
oil
ground coriander
80 g 0.08 kg 0.176 lb 2.82 oz mature Cheddar	grated
remaining salsa