Jump to Recipe
Chilled Cucumber Dill Vichyssoise is a cold potato and leek soup blended with fresh cucumber and dill, then chilled until it’s cool enough to eat with a spoon on a hot day.
I make this in July when the garden dill is going wild and the last thing I want is a hot bowl of soup. The base is classic vichyssoise, leeks and potatoes simmered soft, but the cucumber and dill turn it into something lighter and greener.
It sits in the fridge for a few hours before it’s ready, so this is a make-ahead soup by design. Plan for that.
One thing worth knowing: cold mutes salt and acid, so taste again right before you serve it. A soup that seemed well seasoned warm can taste flat once it’s chilled.
Why You’ll Love This Recipe
- Chills ahead so dinner prep is basically done early
- Uses simple pantry staples plus one bunch of dill
- Cool and light for hot weeknights with no stovetop return
- Naturally gluten free and easy to scale for a crowd
Ingredient Notes
- leeks: Slice first, then rinse in a bowl of cold water since grit hides between the layers even after cutting.
- Yukon gold potatoes: Waxy potatoes blend smooth without turning gluey. Russets can work in a pinch but blend more carefully and in shorter pulses.
- English cucumber: Peel and seed it so the soup doesn’t turn watery or bitter. Regular cucumber works if you scoop out the seeds first.
- fresh dill: Use fresh, not dried. Dried dill tastes dusty and won’t give the same bright, grassy flavor.
- heavy cream: Swap in whole milk or plain Greek yogurt for a lighter, tangier version, though the soup will be thinner.
- stock: Vegetable stock keeps this vegetarian. Use low-sodium if you plan to salt aggressively at the end.
Chilled Cucumber Dill Vichyssoise: Silky and Bright
Ingredients
Method
- Melt the butter in a 5-quart / 4.7 L Dutch oven or soup pot over medium heat. Add the sliced leeks and cook for 6 to 8 minutes, stirring often, until soft but not browned.
- Add the diced potatoes, stock, salt, and white pepper. Bring to a boil, then reduce heat and simmer uncovered for 20 to 25 minutes, until the potatoes are fork-tender.
- Remove the pot from the heat and let the soup cool for 10 minutes.
- Stir the chopped cucumber and dill into the warm soup.
- Working in batches, puree the soup in a blender until completely smooth, about 1 to 2 minutes per batch. You can also use an immersion blender directly in the pot.
- For a silkier texture, pass the puree through a fine-mesh sieve into a large bowl, pressing with a spoon.
- Stir in the heavy cream and lemon juice. Taste and adjust salt and pepper, keeping in mind the soup will taste milder once it’s cold.
- Cover and refrigerate for at least 4 hours, or overnight, until completely chilled.
- Taste the chilled soup again and re-season if needed, since cold mutes salt and acidity.
- Ladle into chilled bowls or mugs. Garnish with diced cucumber, extra dill fronds, and a drizzle of cream.
Notes
- Chill soup at least 4 hours, overnight is better for flavor
- Re-season right before serving, cold dulls salt and acid
- Use waxy potatoes like Yukon gold, not russets, for smooth texture
- Peel and seed the cucumber so the soup doesn’t turn watery
Tips for Success
- Rinse sliced leeks well in a bowl of cold water, they trap grit between the layers even after slicing.
- Use Yukon gold potatoes so the puree blends smooth without turning gluey like starchy russets sometimes do.
- Chill the soup at least 4 hours, overnight gives the best flavor and a properly cold bowl.
- Taste and re-season right before serving since chilling dulls both salt and acidity in the base.
- Strain the puree through a fine-mesh sieve if you want a restaurant-smooth texture with no fiber bits.
Variations
- Swap heavy cream for whole milk or plain Greek yogurt for a lighter, tangier version with less fat.
- Add a peeled avocado to the blender for an extra creamy, slightly richer variation on the classic.
- Stir in a spoonful of horseradish or a dash of hot sauce for a version with a sharper kick.
Storage and Reheating
Chilled Cucumber Dill Vichyssoise keeps in an airtight container in the fridge for 3 to 4 days. The flavor actually improves after a day, once the dill and cucumber have had time to settle into the base.
This soup is meant to be eaten cold, so skip reheating entirely. If it separates a little after sitting, just whisk it back together before ladling into bowls.
I don’t recommend freezing this one. The dairy and cucumber both change texture after thawing, turning watery and grainy.
Serving Suggestions
Serve Chilled Cucumber Dill Vichyssoise in small chilled bowls or mugs, with a swirl of cream and a few extra dill fronds on top.
It works well as a starter before a light main like grilled fish or a chicken salad sandwich. A crusty piece of bread on the side is good for scraping the bowl clean.
For a warm-weather lunch, pair it with a simple tomato salad and a glass of chilled white wine.
FAQ
Why is my vichyssoise gluey instead of silky?
Vichyssoise turns gluey when the potatoes get overworked in a food processor or blender and release too much starch, or when you use a starchy potato like russet. Stick with waxy Yukon gold potatoes and pulse the blender in short bursts. Straining the puree through a fine-mesh sieve also helps smooth out any starchy bits.
Can I use Greek yogurt instead of heavy cream in this vichyssoise?
Yes, plain Greek yogurt works in place of heavy cream for a lighter, tangier vichyssoise. Use the same amount, about 3/4 cup, and stir it in off the heat so it doesn’t split. The soup will be a bit thinner and sharper than the cream version, closer to a tzatziki-style finish.
How far ahead can I make cucumber dill vichyssoise?
Chilled Cucumber Dill Vichyssoise can be made up to 2 days ahead and stored in the fridge in an airtight container. The soup actually tastes better on day two, once the dill and leek flavors settle. Just give it a good stir and taste for seasoning before serving cold.
What goes well with chilled cucumber dill vichyssoise?
Chilled Cucumber Dill Vichyssoise pairs well with grilled shrimp, a simple green salad, or crusty bread for dipping. It works as a light starter before a summer main like roast chicken or a tomato tart. A glass of dry white wine, like sauvignon blanc, rounds it out.
Is chilled cucumber dill vichyssoise gluten free?
Yes, this vichyssoise is naturally gluten free since it’s built from leeks, potatoes, stock, cucumber and cream. Just double check your stock or broth label, since some brands add gluten-containing thickeners. Serve it with a gluten-free bread or crackers if you want something to dip.
What’s the difference between vichyssoise and regular potato leek soup?
Vichyssoise is a chilled version of classic potato leek soup, pureed smooth and served cold instead of hot. This cucumber dill version adds raw cucumber and fresh dill to the base for a brighter, greener flavor than a traditional vichyssoise. Regular potato leek soup is usually served warm and chunkier.
