Potato Soup

Potato soup is a thick, creamy bowl of comfort that comes together in under an hour. The secret is building a flavorful base with onions and celery before the potatoes go in, then cooking the potatoes until they break down and thicken the broth naturally. You get a soup that tastes rich without needing heavy cream.

Ingredients for Potato Soup

Butter and onions form the aromatic base that gives the soup depth. Celery adds a subtle vegetal note, while garlic brings sharpness. Russet potatoes are the backbone, they break down as they cook and thicken the broth into something silky. Chicken broth is the liquid that becomes the soup, and salt and black pepper season it at the end when you can taste what you need. Milk adds richness and a creamy texture without making it heavy, and fresh thyme brings an herbal note that rounds out the flavors.

Why This Potato Soup Works

The potatoes do the heavy lifting here. As they simmer in broth, their starches leach into the liquid and thicken it naturally, so the soup becomes creamy without cream. You are not making a pureed soup, the potatoes soften and break into chunks, giving you texture and substance in every spoonful.

Starting with sautéed onions, celery, and garlic builds a flavor base before the liquid goes in. This step takes just a few minutes but deepens the entire soup. When you add the broth and potatoes to this base, you are building on something savory and complex, not starting from scratch.

Seasoning at the very end is crucial. The soup tastes better the next day once the flavors have had time to blend, so if you make it ahead, it will only improve.

Mistakes To Avoid

Cutting the potatoes too large means they will not cook through by the time the broth has reduced, or they will fall apart into mush if you wait long enough. Cubes of 1/2 inch are the target, they soften in 15 to 20 minutes and break down just enough to thicken the broth.

Seasoning too early locks in salt before you know how much the soup will concentrate. Wait until the potatoes are tender and the broth has simmered down slightly, then taste and adjust. You can always add more salt, but you cannot take it out.

Boiling the milk instead of warming it gently makes it separate and look curdled. Add it off the heat or over low heat, stirring gently, and it will stay smooth and silky.

Skipping the sauté step and dumping everything into the pot at once gives you a flat, one-note soup. Five minutes of cooking onions, celery, and garlic in butter brings out their sweetness and creates the foundation the whole soup rests on.

As an Amazon Associate, we earn from qualifying purchases.

Ingredients

• 3 tablespoons butter
• 1 medium onion, diced
• 2 celery stalks, diced
• 3 cloves garlic, minced
• 2 pounds russet potatoes, peeled and cut into 1/2-inch cubes
• 6 cups chicken broth
• 1 teaspoon salt, plus more to taste
• 1/2 teaspoon black pepper, plus more to taste
• 1 cup whole milk
• 2 sprigs fresh thyme

Step-by-step Instructions

1. Melt butter in a large pot over medium heat until foaming, about 1 minute.
2. Add diced onion and celery, cook for 5 to 7 minutes, stirring often, until softened and fragrant.
3. Stir in minced garlic and cook for 1 minute until the raw smell fades.
4. Pour in chicken broth and add the potato cubes, salt, pepper, and thyme sprigs, bring to a boil over high heat.
5. Reduce heat to medium and simmer uncovered for 15 to 20 minutes, stirring occasionally, until potatoes are tender when pierced with a fork.
6. Remove thyme sprigs, then mash a few potato chunks against the side of the pot with a wooden spoon to thicken the broth.
7. Remove from heat, stir in milk until combined, and taste the soup.
8. Add more salt and pepper if needed, then serve hot.