1 garlic clove, chopped
1 onion, chopped
400g/14oz mixed canned white beans, such as butter beans, cannellini beans etc, rinsed and drained
1 x 400g/14oz can chopped tomatoes
1 tbsp yeast extract (optional)
salt and freshly ground black pepper
oil, for frying
1 tbsp tomato pur茅e
100ml/3陆fl oz hot vegetable stock
100g/3陆oz bacon lardons
4 slices brioche, toasted and buttered