Throw the beans in a pot along with 3 of the garlic cloves, cover with plenty of water and simmer until a bean easily squishes under a spoon, approximately an hour. Once the beans and garlic are cooked put them in a food processor with the avocado, lemon juice, raw garlic clove, dash of olive oil and a sprinkle of salt and pepper and blitz until smooth. This also makes a delicious dip served with vegetable crudités. For a little extra punch add a bunch of coriander leaves and a sprinkle of smoked paprika.