Vichyssoise is a classic French SOUP made from potatoes, leeks, and cream. It is usually served cold, although it can also be served hot. The term Vichyssoise is derived from the French city of Vichy, where the SOUP was first created. The crossword solutions for the term Vichyssoise are 'SOUP' (4 letters) and 'PUREE' (5 letters). PUREE is a method of cooking in which ingredients are blended or mashed into a smooth, thick paste. In the case of Vichyssoise, the potatoes, leeks, and cream are pureed together to create a creamy, velvety SOUP.