America's Test Kitchen Potato Soup Recipe: Velouté Thickness With Celery Crown Crunch

America's Test Kitchen potato soup recipe delivers the velvety, velouté-thick consistency you crave—without lumps or watery disappointment. The secret lies in precise cooking techniques: sautéing onions until golden, simmering broth until deeply flavorful, and blending just enough to achieve that signature creamy yet chunky texture. After years of testing, this method guarantees restaurant-quality results every time.

What sets this recipe apart is the celery crown crunch—thinly sliced celery that stays crisp even after simmering. This adds texture and freshness that store-bought versions can't match.

The soup starts with a rich chicken broth base, then builds layers of flavor with sautéed vegetables, potatoes, and a touch of cream for richness. The blending technique ensures smoothness without sacrificing the comforting chunks of potato.

By the time you're done, you'll have a pot of soup that's creamy yet not heavy, flavorful yet balanced, and perfectly textured. The celery crowns add a satisfying crunch with every spoonful, while the velouté thickness makes it feel luxurious.

This is the kind of soup that warms you from the inside out and has everyone asking for seconds.

Ready in about 1 hour, this recipe is perfect for weeknight dinners or meal prep. The flavors only deepen as it sits, making it even better the next day. Serve with crusty bread or a sprinkle of fresh herbs for the full experience. Let's get cooking!

Ingredients for america's test kitchen potato soup

Sixteen ingredients, one velvety masterpiece—where precision meets comfort in every spoonful.

The foundation begins with yellow onions and celery—the classic mirepoix trio's missing carrot here is intentional, as it allows the celery crowns to remain crisp. Slice the celery into paper-thin rounds (use a mandoline if you're ambitious) for that signature crunch. Yellow Russet potatoes are essential for their waxy texture and even cooking; avoid red potatoes which can turn mushy. For the broth, homemade chicken stock delivers superior depth, but Swanson or Pacific Foods low-sodium versions work in a pinch. The heavy cream and European-style butter create that velouté thickness—don't substitute with lighter cream or margarine, as the fat content is critical for the luxurious mouthfeel.

No fresh thyme? Dried thyme at one-third the amount suffices, though fresh imparts a brighter aroma. The bay leaves should be removed before serving—no one enjoys finding them in their soup. For the garlic, roasted cloves add a subtle sweetness that complements the earthy vegetables. The Diamond Crystal kosher salt is preferred over table salt due to its larger crystal size and purer sodium chloride content. If you're watching sodium, reduce the added salt by half and boost flavor with an extra splash of Worcestershire sauce or a pinch of MSG (trust me, it's not just for Asian cooking). The fresh parsley is purely decorative—skip it if you're serving to guests who dislike garnishes.

This soup develops better flavors overnight, so make a double batch and refrigerate leftovers in airtight containers for up to 5 days. For freezing, portion into 1-cup containers and store for 3 months—the celery crowns will soften but still provide texture. Reheat gently on the stove with a splash of broth to restore creaminess. The velouté sauce thickens as it cools, so stir vigorously before serving. For meal prep, assemble all ingredients except potatoes and broth, then refrigerate the base mixture for up to 2 days before completing the cooking process—this actually enhances flavor development.

Step-by-step instructions for america's Test Kitchen potato soup

A velvety velouté with celery crown crunch and perfect potato texture—this is how we achieve it.

Melt the 4 tablespoons unsalted butter in a large Dutch oven over medium heat. Add the 2 whole yellow onions and 4 whole celery stems, stirring frequently. Cook for 8-10 minutes until the vegetables soften and become translucent, their edges just beginning to caramelize slightly.

This foundational step develops the soup's depth of flavor. I like to press down gently on the vegetables with a wooden spoon during the first 3 minutes—this prevents them from curling and ensures even contact with the pan. The celery crowns should retain their shape for that signature crunch later.

Add the 2 whole carrots and 2 cloves garlic cloves to the Dutch oven, stirring to combine. Cook for 2 minutes until fragrant, then sprinkle in the 2 tablespoons all-purpose flour and stir vigorously for 1 minute to coat the vegetables evenly.

Gradually whisk in the 6 cups chicken broth, scraping up any browned bits from the bottom of the pot. This technique, called deglazing, captures concentrated flavor that would otherwise go down the drain. Bring the mixture to a gentle simmer over medium-high heat and let it cook uncovered for 10 minutes to develop a rich roux base.

Add the 2.5 lb peeled yellow russet potatoes (cut into 1-inch cubes) to the simmering broth. Stir gently to distribute the potatoes evenly. The soup should return to a simmer immediately—if not, increase the heat slightly. Cook uncovered for 15-18 minutes, stirring occasionally, until the potatoes are fork-tender but not yet falling apart.

Here's where precision matters: you want the potatoes to hold their shape when pierced with a fork but offer slight resistance. Overcooking at this stage will make them mushy later when we finish with cream. I check doneness by tasting a potato—it should be soft inside but still have a slight bite.

Reduce the heat to low and stir in the 0.5 cup heavy cream, 1 tablespoon fresh thyme, 2 whole bay leaves, 1.5 teaspoons salt, and 0.5 teaspoon ground black pepper. Simmer gently for 5 minutes to allow the flavors to meld. The soup should now have a luxurious velouté texture with visible potato chunks.

Remove the bay leaves and adjust seasoning if needed—this is where the soup's balance comes together. The cream should add richness without overpowering the potato and vegetable flavors. If the soup appears too thick, whisk in 2-3 tablespoons of hot broth to reach your desired consistency.

Ladle the soup into bowls and garnish each serving with 0.25 cup chopped fresh parsley. The parsley adds a bright contrast to the creamy soup and enhances its visual appeal. Serve immediately while the celery crowns retain their crisp texture and the velouté maintains its perfect consistency.

This soup is best enjoyed fresh from the pot. The celery crowns will soften slightly over time, so don't make it more than 2 hours ahead if you must. For maximum impact, serve with crusty bread to soak up every last drop of that velvety velouté.

Serving suggestions for this recipe

Crusty Bread Pairings

Serve this velouté-style potato soup with a warm, crusty baguette or sourdough loaf—I love the Breads Bakery French Baguette from my local grocery store. The crispy crust soaks up the creamy soup beautifully while providing a satisfying contrast in texture.

For extra indulgence, toast the bread with garlic butter before serving. 🥖

Cheese Board Elevation

Turn your soup into a full meal by pairing it with a simple cheese board. I recommend aged cheddar, brie, and blue cheese for their rich, complementary flavors. The sharpness of the cheddar cuts through the creaminess, while the brie adds another layer of velvety texture.

Add a few walnuts and fig jam for sweetness that balances the savory soup.

Herb Garnish Variations

While fresh parsley works beautifully, don't be afraid to experiment with other herbs. Try chopped chives for a milder flavor or thinly sliced scallions for a subtle bite. For a pop of color, add edible flowers like nasturtiums—just a few petals on each bowl makes it look restaurant-worthy.