This recipe has two parts: you make the vegetable stock, which takes about 20 minutes, then you make the cheese mixture at the end to add to the soup (only takes 2-3 minutes)...then blend them together!...
The earth and sand tend to seep between the many leaves of the leek. For cleaning, make an incision on the half of its length after removing the sheets from above. Then pass under cold water, taking care to remove the leaves....