This elegant soup highlights roasted cauliflower blended to a smooth, creamy texture, enhanced with fragrant truffle oil. The combination of tender vegetables, a touch of cream, and subtle seasoning creates a luxurious and velvety dish that suits both light meals and refined starters. Roasting the cauliflower adds depth, while chives offer a fresh garnish. Ideal for comforting contemporary European dining, this dish is naturally vegetarian and gluten-free.
I never thought cauliflower could taste this luxurious until a rainy November evening when I roasted a head just to use it up. The kitchen filled with a sweet, nutty aroma I hadn't expected. When I blended it with cream and added a careful drizzle of truffle oil, the soup turned into something I'd happily order at a bistro.
The first time I served this to friends, I worried it might be too simple. But when I brought out the bowls with a swirl of truffle oil and a scatter of chives, the table went quiet except for spoons clinking. One friend asked if I'd trained in France, which made me laugh into my napkin.
Ingredients
- Cauliflower florets (800 g): Roasting them transforms the flavor from bland to sweet and nutty, so don't skip that step.
- Yellow onion, diced: A mild onion works best here so it doesn't compete with the truffle.
- Garlic, minced: Just two cloves add warmth without shouting over the delicate cauliflower.
- Yukon Gold potato, peeled and diced: This gives the soup body and a silky texture when blended.
- Vegetable broth (1 liter): Use low sodium so you control the salt, especially if your truffle oil is already seasoned.
- Heavy cream (240 ml): Stir it in at the end for richness without breaking the smoothness.
- Olive oil: One tablespoon roasts the cauliflower, the other sweats the aromatics.
- Sea salt, black pepper, nutmeg: Season gradually and taste as you go, the nutmeg is optional but adds a whisper of warmth.
- Truffle oil: Start with two teaspoons and add more only if you want it, this ingredient can take over fast.
- Fresh chives, chopped: A bright green garnish that cuts through the creaminess beautifully.
Instructions
- Roast the cauliflower:
- Preheat your oven to 220°C (425°F). Toss the florets with one tablespoon of olive oil and spread them on a baking sheet in a single layer. Roast for 20 to 25 minutes until the edges are golden and the centers are tender.
- Sauté the aromatics:
- Heat the remaining tablespoon of olive oil in a large pot over medium heat. Add the diced onion and cook for 3 to 4 minutes until it softens and turns translucent. Stir in the garlic and potato, cooking for another 2 minutes until fragrant.
- Simmer the soup base:
- Add the roasted cauliflower to the pot and pour in the vegetable broth. Bring everything to a simmer, then cover and cook for 10 to 15 minutes until the potato pieces are very soft and break apart easily.
- Blend until silky:
- Remove the pot from the heat. Use an immersion blender to puree the soup right in the pot, or transfer it in batches to a countertop blender. Blend until completely smooth with no lumps.
- Finish with cream:
- Stir in the heavy cream, a pinch of nutmeg if you like, and season with salt and pepper. Warm the soup gently over low heat, but don't let it boil or the cream may separate.
- Serve and garnish:
- Ladle the soup into bowls. Drizzle each serving with truffle oil and scatter chopped chives on top.
There was a winter dinner when I made this soup as a first course before a simple roast chicken. My mother, who rarely compliments my cooking, went back for a second bowl and asked me to write down the recipe. I realized then that sometimes the smallest drizzle of something special can turn everyday ingredients into a memory.
Making It Your Own
If you want a lighter version, swap the heavy cream for coconut cream or unsweetened oat cream and you'll still get that velvety texture. I've also made this without any cream at all, relying just on the potato and cauliflower for body, and it was still delicious. For a bit of crunch, serve the soup with toasted parmesan crisps or a chunk of crusty sourdough on the side.
Pairing and Serving
This soup pairs beautifully with a dry white Burgundy or a glass of Champagne if you're feeling celebratory. I've served it in small cups as an appetizer at a dinner party, and it disappeared before the main course even hit the table. The truffle aroma alone gets people leaning in before they've taken a sip.
Storage and Reheating
You can make this soup up to two days ahead and store it in the fridge in an airtight container. When you reheat it, do so gently over low heat and stir often so the cream doesn't split. Add the truffle oil and chives only when you're ready to serve, never before storing.
- Let the soup cool completely before refrigerating to preserve the texture.
- Reheat individual portions in the microwave at half power, stirring halfway through.
- Freeze the soup base without cream for up to a month, then stir in cream after thawing and reheating.
This soup has become my go-to whenever I want to impress without spending all day in the kitchen. It reminds me that elegance doesn't require complexity, just good ingredients and a little care.
Recipe FAQs
- → How do I achieve a creamy texture without dairy?
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Substitute heavy cream with coconut or unsweetened oat cream to maintain creaminess while keeping it dairy-free.
- → What is the best way to roast the cauliflower?
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Toss florets with olive oil and roast at 220°C (425°F) for 20–25 mins until golden and tender to enhance flavor.
- → Can I adjust the intensity of truffle flavor?
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Add truffle oil gradually; start with less to avoid overpowering the delicate soup base.
- → What garnishes complement this soup?
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Finely chopped fresh chives add a mild onion note and vibrant color as a garnish.
- → Which breads pair well alongside this dish?
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Crusty bread or parmesan crisps add texture and balance the creamy soup nicely.