Finnish Kesäkeitto Summer Vegetable Soup

Walking through Helsinki's market square in late July, I watched a grandmother methodically select vegetables for what she called kesäkeitto. The steam rising from her cup later that day carried the purest taste of Scandinavian summer I'd ever experienced. I've been making this soup ever since, tweaking it until it felt like my own.

Last summer my neighbor kept popping over whenever she smelled dill wafting through our open windows. She swore my version was better than her Finnish grandmother's, which I took as the highest compliment imaginable. Now we make it together on Sunday afternoons, taking turns with the vegetable prep.

Ingredients

• New potatoes: These hold their shape beautifully and bring a delicate sweetness that russets would completely ruin
• Fresh carrots: Look for thin ones with bright green tops, they cook at the same pace as the other vegetables
• Small cauliflower: Cut into tiny florets so everything finishes cooking together in harmony
• Green beans: Fresh ones snap satisfyingly and retain their lovely crunch even in hot broth
• Fresh peas: If you can shell them yourself, do it, they taste completely different from frozen
• Leek: Only use the white and pale green parts, the darker sections make the soup look muddy
• Fresh dill: This is non-negotiable, dried dill would be a complete tragedy here
• Whole milk and cream: The combination creates richness without becoming overwhelming or heavy
• Unsalted butter: Essential for that silky mouthfeel that makes Finnish soups so special
• All-purpose flour: Just enough to give the broth body while remaining light and elegant
• Salt and white pepper: White pepper keeps the soup pristine in appearance while delivering gentle heat

Instructions

Start the vegetable simmer:

Bring your water or broth to a gentle bubble and add the potatoes, carrots, and cauliflower. Let them cook for about 8 minutes until slightly softened but still holding their shape.

Add the delicate vegetables:

Toss in the green beans, peas, leek, and radishes if you're using them. Continue cooking for another 7 to 8 minutes until everything is tender when pierced with a fork.

Make the roux:

Melt the butter in a small saucepan over medium heat, then stir in the flour and cook for exactly 1 minute. This brief cooking removes any raw flour taste and creates a smooth base.

Create the creamy foundation:

Slowly whisk in the milk, stirring continuously until the mixture thickens into velvety smoothness. Take your time here to prevent any lumps from forming.

Bring it all together:

Pour the milk mixture and cream into the soup pot, stirring gently to combine. Heat everything through but keep it below a boil to prevent the dairy from separating.

Season and finish:

Add salt and white pepper to taste, then stir in the chopped dill just before serving. This preserves the herb's bright flavor and vibrant color.

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My daughter declared this the only soup she'd ever eat on a hot day after I served it for her birthday dinner. The way the sunlight caught the colorful vegetables through the serving bowl made the whole table pause and smile.

Making It Vegan

Plant-based butter works remarkably well here, and I've actually come to prefer oat milk for its subtle sweetness. The roux still thickens beautifully, and the vegetables remain the star of the show.

Seasonal Swaps

In autumn I add cubed turnip and reduce the peas. Winter versions benefit from a pinch more white pepper and some chopped kale stirred in at the end.

Serving Suggestions

Traditional rye bread makes this a complete meal, but I've also served it with sourdough toast for breakfast. A small pat of cold butter melting on top creates the most luxurious finish.

• Let the soup rest for 5 minutes before serving to allow flavors to meld
• Leftovers taste even better the next day as the vegetables continue to absorb flavor
• Don't skip the radishes if you can find them, they add a lovely peppery bite

Save

This soup captures everything I love about Nordic cooking, simple ingredients treated with respect to let their natural beauty shine through.

Questions & Answers

→ What makes Finnish Kesäkeitto different from other cream soups?

Kesäkeitto features a light, delicate milk-based broth rather than heavy cream, allowing the fresh vegetables to shine. The seasonal medley includes new potatoes, cauliflower, green beans, and peas, creating a lighter texture than traditional cream soups.

→ Can I prepare this soup ahead of time?

Yes, you can make Kesäkeitto up to 2 days in advance. Store it refrigerated in an airtight container. Reheat gently over medium-low heat, stirring occasionally. Add a splash of milk if it thickens too much upon standing.

→ What vegetables work best in this summer soup?

Traditional choices include new potatoes, carrots, cauliflower florets, green beans, fresh peas, and leeks. You can also add radishes for color or baby spinach for extra nutrition. Use whatever fresh vegetables are in season for best results.

→ How do I make this soup gluten-free?

Simply substitute the all-purpose flour with a gluten-free flour blend when making the roux. Ensure your vegetable broth is certified gluten-free as well. The soup naturally contains no other gluten-containing ingredients.

→ What should I serve with Finnish Kesäkeitto?

Traditional accompaniments include rye bread or crispbread for dunking. The soup also pairs well with a simple green salad with vinaigrette. For a complete Finnish meal, serve with buttered dark bread and pickled cucumbers on the side.

→ Can I freeze this soup?

While possible, freezing may affect the creamy texture. If freezing, cool completely and store in freezer-safe containers for up to 2 months. Thaw overnight in the refrigerator and reheat gently, whisking to restore smoothness.