2 garlic cloves, finely chopped
500g/1lb 2oz leeks, trimmed, washed and sliced
2 sprigs rosemary
2 x 400g/14oz tins borlotti beans, drained and rinsed
500ml/18fl oz vegetable or chicken stock (made from a cube)
salt and freshly ground black pepper
1 tbsp olive oil
40驳/1陆辞锄 butter
200g/7oz sliced bread (stale bread is fine), crust removed