This is such a simple soup to make with just leeks, water, Oxo vegetable stock, cornflour or plain flour, black pepper and butter or sunflower oil for vegan version. They both taste as good either way though. Leeks are not only full of vitamin A but of Zeaxanthin too which means they are good for your eyes and help prevent cataracts too. These guys are part of the onion family, so no need for onion here. Crusty rolls at the ready...
Here is the Recipe
