French Vichyssoise: Chilled Leek and Potato Soup Recipe

Vichyssoise is a smooth French-style soup made with leeks, potatoes, stock, and cream, then chilled and served cold. Its mild allium flavor and velvety texture make it refreshing yet substantial, and the simple ingredients are easy to prepare ahead for a summer lunch or first course.

Ingredients

3 large leeks, about 1¾ lb (750 g) after trimming, white and light green parts only
2 tablespoons (28 g) unsalted butter
1 medium yellow onion, about 5 oz (150 g), peeled and chopped
1½ lb (680 g) Yukon Gold or other starchy potatoes, peeled and cut into ½-inch (1.25 cm) pieces
5 cups (1.2 L) low-sodium chicken or vegetable stock
1 teaspoon (6 g) fine salt, plus more to taste
¼ teaspoon (0.5 g) ground white pepper, plus more to taste
1 cup (240 ml) heavy cream, cold
2 tablespoons (6 g) finely chopped fresh chives, for serving

Instructions

Clean and cut the leeks. Trim off the root ends and dark green tops, keeping the white and pale green sections. Slice the leeks lengthwise, then cut them crosswise into thin half-moons. Separate the layers and rinse thoroughly in a bowl of cold water, lifting the leeks out so grit stays behind. Drain well. Leeks often trap sand between their layers, so rinse a second time if you see any grit.
Soften the vegetables. Melt the butter in a large heavy-bottomed pot over medium-low heat. Add the leeks and onion and cook for 10 minutes, stirring every minute or two. Keep the heat gentle: the vegetables should soften without browning. If they begin to stick, lower the heat and stir in a tablespoon of the measured stock.
Simmer until tender. Add the potatoes, stock, salt, and white pepper. Raise the heat and bring the liquid just to a simmer, which should take about 3 minutes. Reduce the heat to maintain a gentle simmer and cook for 15 minutes, or until a knife slides easily into a potato piece. Avoid a hard boil, which can make the potatoes break down unevenly and the soup more difficult to blend smoothly.
Blend until silky. Take the pot off the heat. Blend with an immersion blender until completely smooth, moving the blender around the pot and keeping its head submerged to limit splashing. If using a countertop blender, work in small batches and leave space for steam to escape; hot liquid can expand suddenly. Return the blended soup to the pot if needed, then whisk in the cold cream. Taste and adjust the salt and white pepper. The soup should taste well-seasoned even before chilling, since cold temperatures soften the perception of seasoning.
Cool and chill. Let the soup cool in the pot for about 30 minutes, stirring once or twice. Transfer it to a shallow covered container and refrigerate for 3 hours 30 minutes, or until thoroughly cold. Keep the cooling period brief and refrigerate the soup within 2 hours of cooking. For a quicker, more even chill, divide it between two shallow containers rather than leaving it in a deep pot.
Finish and serve. Stir the chilled soup well, since a little separation can happen as it rests. If it is thicker than you like, whisk in cold stock or water a tablespoon at a time. Ladle into chilled bowls and scatter with chives. Add a small swirl of cream if desired, and serve cold.

Tips

Wash leeks carefully. A quick rinse of whole leeks usually leaves grit behind. Slice them first, loosen the layers, and rinse them in a bowl; this helps keep the finished soup smooth rather than sandy.
Keep the vegetables pale. Browning the leeks or onion changes the soup’s delicate flavor and gives it a darker color. Use medium-low heat and stir regularly. A little softening is all they need before the potatoes and stock go in.
Choose a potato that blends well. Yukon Gold potatoes give a creamy texture and mild flavor. Russets also work and make the soup especially soft, while waxy potatoes can leave it slightly less silky. Cut the pieces to a similar size so they finish cooking together.
Adjust the finish to taste. Heavy cream makes the classic rich, rounded version. For a lighter result, use half-and-half, knowing the soup will be less full-bodied. If your stock is salted, begin with less added salt and correct the seasoning after blending.

Serving Suggestions

Serve vichyssoise cold in small bowls or cups as a first course, or offer a larger bowl with bread for a light meal. Chives are a classic garnish because their fresh, onion-like flavor complements the mild leeks without overwhelming them. A few drops of cream, a little finely sliced green onion, or a restrained pinch of white pepper also work well. Keep garnishes simple so the soup’s smooth texture and gentle flavor remain the focus.

For a fuller lunch, pair it with a crisp green salad, a tomato salad, or a sandwich with a savory filling. Toasted baguette, crackers, or thin slices of dark bread provide a useful contrast to the soup’s soft texture. If serving it as part of a multi-course meal, pour modest portions and bring the bowls to the table chilled. The soup can be portioned and garnished shortly before serving, which makes it practical for entertaining without last-minute cooking.

Variations

Recipes for vichyssoise vary, and accounts of its precise origin are disputed. Leeks, potatoes, stock, and cream form the familiar foundation, but cooks differ on the proportions, the type of stock, and whether they strain the blended soup. This version is meant to be smooth without requiring straining. For an especially refined texture, pass it through a fine-mesh sieve after blending; expect a little less finished soup, since some solids will remain in the sieve.

For a vegetarian version, use vegetable stock. To make it dairy-free, replace the butter with olive oil and use an unsweetened plant-based cooking cream. Oat or cashew cream can give a similarly rounded texture, though each brings its own faint flavor; choose one labeled unsweetened so the soup does not taste sweet. A small amount of extra stock can replace the cream, but the result will be thinner and less rich.

You can also serve the soup warm rather than cold. Warm it gently over low heat after blending and adding the cream, stirring until hot but not boiling. That makes a comforting leek-and-potato soup, though chilling is what gives vichyssoise its familiar character. For a subtle variation, garnish with a few thin slices of radish or a little finely chopped parsley alongside the chives; avoid adding so much garnish that it masks the mild base.

Storage and Reheating

Refrigerate the soup in a covered container within 2 hours of cooking. It keeps for 3 to 4 days in the refrigerator; stir before serving, and check the aroma and appearance if it has been stored near the end of that window. Keep it cold between servings rather than leaving a serving bowl out for an extended period. If you are making it ahead, chill it in shallow containers and add the chives only when ready to serve.

Vichyssoise is usually served cold, so reheating is optional. To serve it warm, heat only the portion you plan to eat in a saucepan over low to medium-low heat, stirring frequently. Reheat leftovers to 165°F (74°C), checked with a food thermometer, then serve promptly. Avoid letting the soup boil, which can affect its creamy texture. You may freeze it in a freezer-safe container for up to 2 months, although the cream can separate or become slightly grainy after thawing. Thaw it overnight in the refrigerator, stir or blend briefly to smooth it, and reheat as described if serving warm.

Frequently Asked Questions

Is vichyssoise always served cold?
It is best known as a chilled soup, and this recipe is designed to be served cold. You can warm it gently if you prefer, but do not boil it after the cream is added. The texture may be a little different when warm, and the chilled version is the familiar presentation.

Can I make vichyssoise the day before?
Yes. Prepare and chill the soup a day ahead, keeping it covered in the refrigerator. Before serving, stir it thoroughly and taste again; cold storage can make the seasoning seem milder. Adjust the salt or pepper, thin it with a little cold stock if needed, and add fresh chives at the table.

Do I need to strain the soup?
No, not if the leeks are clean, the potatoes are fully tender, and you blend the mixture until smooth. Straining is an optional finishing step for a particularly fine texture. It can catch a few fibrous leek strands, but it also takes extra time and leaves some of the soup behind.

What can I use instead of heavy cream?
Half-and-half makes a lighter soup, though it will be less rich. Unsweetened oat or cashew cooking cream is a useful dairy-free substitute, while extra stock keeps the ingredient list simple but produces a thinner result. Add substitutes gradually and taste before adding more, since their thickness and flavor can differ.

Why is my vichyssoise gluey?
Potatoes can turn gluey if they are blended too aggressively or for too long, especially in a high-powered countertop blender. Blend only until smooth, using short pulses if needed, and avoid overworking the soup. It also helps to use Yukon Gold or russet potatoes and to simmer them only until tender.

Can I use the dark green parts of the leeks?
The dark tops are tougher and more fibrous than the white and light green sections, so they are not ideal for this smooth soup. Save them for stock if you like, or use a little in the soup only if you chop them very finely and blend thoroughly. Too much can make the flavor stronger and the texture less delicate.

More recipes to cook

Safety notes: safe minimum internal temperatures from USDA FSIS; raw and undercooked fish guidance from the U.S. FDA. Food safety notes

Spotted an error? Tell us and we will correct it (corrections policy).