Clean, peel and cut into cubes squash, sweet potatoes and leeks. Saute leeks first, then sweet potato squash. After a few minutes (5 m.) When the outside starts to put soft, add water just to cover. Add salt and pepper to taste and simmer for about 20 minutes.
Blend with mixer. Once crushed and have homogeneous cream add some cream / milk or cheese wedge.
Before serving, add a splash of olive oil Olicatessen& Basil
In the details is the difference!