An old-fashioned classic brought up to date in a slow cooker. Perfect for a wintry day, this filling, budget-friendly soup is made with dried split green peas and smoky gammon. Freeze any ...

For a thicker soup, add 2–3 tablespoons cornflour mixed with a little water at the same time as the milk or cream. You will need a slow cooker that holds at least 4 litres/7 pints for this recipe.