Four season white bean + greens soup

This is one of our very favourite soup recipes, which is high praise indeed coming from Alison, whose last meal on earth would probably be a bowl of soup. The simple savoury base can be added to according to the seasons, so we make it all year round. Although the ingredients are classic and straightforward, there is a real depth of flavour from the gremolata, which gives a fresh, garlicky hit on top the creamy beans. It is well worth seeking out beans in a jar rather than t