Brown Butter Celeriac Velouté with Hazelnut-Sage Crunch
Celeriac looks like a medieval weapon, but treat it right and it yields the silkiest, most elegant soup in the winter café canon. We’re building a proper French velouté here—sweating the roots in cultured butter, pureeing until glass-smooth, and finishing with a hazelnut-sage brown butter that crackles on top. High-impact comfort that eats like a Tuesday night but looks like a tasting menu.
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Timeline
Ingredients
- 1.5 lbs Celeriac (celery root)(About 1 large root, aggressively peeled and cut into 1-inch cubes)
- 1 medium Yukon Gold potato(Peeled and diced. This adds the necessary starch for emulsion.)
- 2 medium Leeks(White and light green parts only, sliced and washed thoroughly)
- 4 tbsp Cultured butter(Divided into 2 tbsp for the soup base and 2 tbsp for the garnish)
- 1/2 cup Dry white wine(Sauvignon blanc or Pinot grigio work perfectly)
- 4 cups Chicken or vegetable stock(Low-sodium if store-bought)
- 1/4 cup Crème fraîche(Heavy cream works in a pinch, but crème fraîche adds a vital tang)
- 1/3 cup Hazelnuts(Roughly chopped)
- 12 leaves Fresh sage leaves(Torn if large)
- 1 pinch Fresh nutmeg(Freshly grated)
- to taste Flaky sea salt and white pepper(White pepper maintains the pristine color of the velouté)
- 1 teaspoon Kosher salt(Used in Step 3 to season vegetables and draw out moisture.)
- As needed Cold water(Used in Step 1 for washing grit out of the leeks.)
Instructions
- 1
Celeriac is deeply ugly. Grab a sharp knife and aggressively slice away the knobby, dirt-hiding skin until you hit the pristine white flesh. Cube 1.5 lbs Celeriac (celery root) and 1 medium Yukon Gold potato. Wash your 2 medium Leeks well in a bowl of As needed Cold water—grit is the enemy of a silky soup.
10 min
Tip: Don't be precious with peeling the celeriac; you need to remove all the woody exterior.
- 2
Melt 2 tbsp Cultured butter in a heavy Dutch oven over medium-low heat. Add the 2 medium Leeks. We want them soft and translucent, not browned. This is your flavor base; let time do the work.
5 min
Tip: If the leeks start taking on color, drop the heat and add a splash of water.
- 3
Tumble in the 1.5 lbs Celeriac (celery root) and 1 medium Yukon Gold potato. Season generously with 1 teaspoon Kosher salt now to draw out moisture. Pour in 1/2 cup Dry white wine and let it simmer until the pan is nearly dry. The acidity here cuts the earthy starchiness of the roots.
4 min
Tip: Why it works: Adding wine before the stock concentrates the tartness and burns off the harsh alcohol.
- 4
Pour in 4 cups Chicken or vegetable stock. Bring to a gentle bubble, then turn the heat to low, cover, and walk away. The roots need to be entirely, completely fall-apart tender.
25 min
Tip: If there’s any resistance when pierced with a paring knife, your final puree will be gritty like a bad alibi. Give it more time if needed.
- 5
While the soup simmers, make your garnish. Butter is not a garnish, but brown butter absolutely is. Melt the 2 tbsp Cultured butter in a small skillet over medium heat. When it foams, add the 1/3 cup Hazelnuts and 12 leaves Fresh sage leaves. Swirl until the nuts are toasted and the milk solids turn a deep amber. Pull off the heat immediately.
5 min
Tip: Transfer the mix to a small heat-proof bowl immediately so the butter doesn't burn in the residual pan heat.
- 6
Transfer the soft root mixture to a high-speed blender in batches. Do not fill past halfway unless you want a hot-soup ceiling. Blend on high until the texture is smooth as glass. The starch from the potato emulsifies the liquid, skipping the need for a traditional flour roux.
5 min
Tip: An immersion blender will get you a rustic soup, but a stand blender is non-negotiable for true café-level silk.
- 7
Pour the velouté back into the pot over low heat. Whisk in 1/4 cup Crème fraîche, 1 pinch Fresh nutmeg, and to taste White pepper. Taste for to taste Flaky sea salt. Ladle into warm bowls and spoon the hazelnut-sage crunch over the top.
2 min
Tip: Don't let the soup boil once the crème fraîche is added, or it might split.
Chef's Notes
Cami’s shortcut note: You can make the soup base up to 3 days in advance (the fridge is your friend, flavors will only deepen). Reheat gently on the stove and whisk vigorously before serving. But make the hazelnut-sage butter right before you eat—that hot, crackling contrast against the velvety soup is the entire point. Don't skip this.
Frequently Asked Questions
How long does Brown Butter Celeriac Velouté with Hazelnut-Sage Crunch take to make?
Brown Butter Celeriac Velouté with Hazelnut-Sage Crunch takes about 51 minutes total. That includes 15 minutes of prep and 36 minutes of cooking.
How many servings does this recipe make?
This recipe makes 4 servings.
What skill level is needed for Brown Butter Celeriac Velouté with Hazelnut-Sage Crunch?
This recipe is rated medium — it's intermediate, requiring some cooking experience.
What ingredients do I need for Brown Butter Celeriac Velouté with Hazelnut-Sage Crunch?
The main ingredients are: Celeriac (celery root), Yukon Gold potato, Leeks, Cultured butter, Dry white wine, Chicken or vegetable stock, Crème fraîche, Hazelnuts, Fresh sage leaves, Fresh nutmeg, Flaky sea salt and white pepper, Kosher salt, Cold water.
What type of meal is Brown Butter Celeriac Velouté with Hazelnut-Sage Crunch?
Brown Butter Celeriac Velouté with Hazelnut-Sage Crunch is categorized as: soup, dinner, lunch.
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