Vichyssoise with Garlic

In its traditional form, this cold potato-and-leek soup borders on boring: potatoes, leeks (or onions or a combination), water or stock, salt and pepper, butter, and cream. What little complexity the soup has comes from butter, lots of salt and pepper, good stock, and, of course, cream. But if you add other vegetables, like garlic and carrots, things become more interesting. And you can nudge the soup over into gazpacho territory by adding a tomato to the mix, along with basil. Some protein, like shrimp, can turn it into more of a whole-meal soup.