National Vichyssoise Day

National Vichyssoise Day is observed every year on November 18 in the United States. The holiday celebrates vichyssoise, a smooth soup traditionally made with leeks, potatoes, stock, and cream. It is usually served cold, although similar soups may also be enjoyed warm.

History of National Vichyssoise Day

The exact origin of National Vichyssoise Day is unclear, but the modern version of vichyssoise is commonly associated with French chef Louis Diat. He worked at the Ritz-Carlton in New York City and introduced the chilled soup there in the early 20th century.

Diat said the recipe was inspired by a potato and leek soup his mother prepared during his childhood near Vichy, France. On warm days, he and his family cooled the soup by adding cold milk.

Although similar potato and leek soups existed earlier in French cuisine, Diat helped popularize the chilled version in the United States. The dish later became a familiar item in restaurants and cookbooks.

Interesting Facts About National Vichyssoise Day

• Vichyssoise is traditionally made with leeks, potatoes, stock, and cream.
• The soup is blended until it develops a smooth, creamy texture.
• It is usually served chilled, but related potato and leek soups are often served hot.
• The dish is commonly garnished with chopped chives.
• Louis Diat named the soup after Vichy, a town near the area where he grew up in France.
• Vegetarian versions can be made with vegetable stock instead of chicken stock.
• Modern variations may include cauliflower, celery, herbs, or dairy-free ingredients.

How to Take Part in National Vichyssoise Day

Celebrate National Vichyssoise Day by preparing the soup at home or ordering it at a restaurant. Try a traditional recipe, experiment with a vegetarian or dairy-free variation, or compare the chilled version with a warm potato and leek soup. Keep the finished soup refrigerated and follow safe food-handling practices when storing and serving it.

When Is National Vichyssoise Day in 2026?

National Vichyssoise Day is observed on November 18 each year.

Observations