
Cream of celery or mushroom soup is a versatile and comforting dish that can be easily prepared at home with just a few simple ingredients. Whether you're looking to serve it as a standalone appetizer or use it as a base for casseroles and sauces, mastering this recipe is a valuable culinary skill. Both versions begin with sautéing aromatic vegetables like onions and garlic, followed by simmering the primary ingredient—celery or mushrooms—in a rich broth. The addition of cream or a roux thickens the soup, creating a smooth and velvety texture. With its creamy consistency and rich flavors, this soup is perfect for any season and can be customized with herbs, spices, or even a touch of wine for added depth.
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What You'll Learn
- Choosing Ingredients: Fresh celery/mushrooms, butter, flour, stock, cream, and seasonings for rich flavor
- Sautéing Vegetables: Cook celery/mushrooms until tender to enhance natural flavors and deepen taste
- Making Roux: Combine butter and flour to thicken soup base for creamy consistency
- Simmering Broth: Add stock, simmer until vegetables soften, then blend for smooth texture
- Finishing Touches: Stir in cream, season to taste, and garnish with herbs for serving

Choosing Ingredients: Fresh celery/mushrooms, butter, flour, stock, cream, and seasonings for rich flavor
The foundation of a rich, flavorful cream of celery or mushroom soup lies in the quality and freshness of your ingredients. Start with fresh celery or mushrooms as your base. For celery, choose crisp, bright green stalks with tight leaves, avoiding any that are limp or browned. If mushrooms are your preference, opt for varieties like cremini or shiitake for their earthy depth, ensuring they are firm and free of slimy spots. Fresh produce not only enhances flavor but also contributes to the soup’s vibrant color and texture.
Next, butter serves as the backbone of your soup’s richness. Use unsalted butter to control the sodium content, aiming for 2–3 tablespoons per 4 servings. Butter not only adds a velvety mouthfeel but also acts as a carrier for fat-soluble flavors, amplifying the taste of your vegetables. For a lighter alternative, substitute half the butter with olive oil, though this may slightly alter the soup’s creamy profile.
Flour is essential for creating a roux, the thickening agent that gives your soup body. Use 2–3 tablespoons of all-purpose flour for every 4 cups of liquid. Cook the flour in butter for 2–3 minutes to eliminate its raw taste, stirring constantly to prevent burning. This step is crucial for achieving a smooth, lump-free consistency.
Stock forms the liquid base of your soup, and its quality directly impacts the final flavor. Opt for homemade vegetable or chicken stock for depth, or choose a low-sodium store-bought version to control seasoning. Use 4 cups of stock for a standard batch, adjusting based on desired thickness. For a vegetarian mushroom soup, mushroom-based stock adds an extra layer of umami.
Cream introduces the signature silkiness to your soup. Heavy cream provides the richest result, but half-and-half or whole milk can be used for a lighter option. Add 1–1.5 cups of cream during the final stages of cooking, allowing it to heat through but not boil to prevent curdling. For a dairy-free alternative, coconut milk or cashew cream can mimic creaminess, though they will alter the flavor profile slightly.
Finally, seasonings elevate your soup from basic to exceptional. Start with salt and pepper, adjusting to taste. For celery soup, a pinch of nutmeg or a squeeze of lemon juice brightens the flavor, while mushroom soup benefits from thyme, garlic, and a splash of sherry for complexity. Taste and adjust as you go, remembering that the goal is to enhance, not overpower, the natural flavors of your ingredients.
By carefully selecting and preparing these ingredients, you’ll create a cream of celery or mushroom soup that is both comforting and sophisticated, with a richness that comes from thoughtful, intentional choices.
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Sautéing Vegetables: Cook celery/mushrooms until tender to enhance natural flavors and deepen taste
Sautéing celery and mushrooms is a transformative step in crafting a rich, flavorful cream of celery or mushroom soup. Unlike boiling or steaming, sautéing concentrates the vegetables' natural sugars and deepens their umami notes through the Maillard reaction—a chemical process that occurs when amino acids and sugars react to heat, creating complex, caramelized flavors. This technique not only enhances the taste but also builds a robust foundation for the soup’s creamy base.
To achieve optimal tenderness and flavor, start by heating a tablespoon of butter or olive oil in a heavy-bottomed pot over medium heat. Add thinly sliced celery or mushrooms, ensuring they’re spread in a single layer to avoid steaming. For celery, cook for 5–7 minutes, stirring occasionally, until it softens and turns pale green. Mushrooms, with their higher moisture content, require 8–10 minutes to release their liquid and develop a golden-brown crust. Season lightly with salt during cooking to draw out excess moisture and intensify flavor.
The choice of fat matters here. Butter adds a rich, nutty undertone, while olive oil provides a lighter, fruitier profile. For a dairy-free option, avocado oil or coconut oil works well, though the latter imparts a subtle sweetness. Regardless of the fat used, maintain a consistent temperature to prevent burning, which can introduce bitter notes that overpower the soup’s delicate balance.
A common mistake is overcrowding the pan, which traps steam and prevents proper browning. If working with a large batch, sauté in smaller portions, adding more fat as needed. Once the vegetables are tender and lightly browned, deglaze the pan with a splash of dry white wine or vegetable broth to capture the flavorful browned bits (fond) stuck to the bottom. This step not only adds depth but also ensures no flavor is wasted.
The takeaway is clear: sautéing celery and mushrooms until tender is not just a step—it’s the secret to elevating cream of celery or mushroom soup from ordinary to extraordinary. By mastering this technique, you unlock the vegetables’ full potential, creating a soup that’s both comforting and complex. Patience and attention to detail here pay dividends in every spoonful.
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Making Roux: Combine butter and flour to thicken soup base for creamy consistency
A roux is the backbone of a velvety soup, transforming thin broths into rich, creamy delights. This simple mixture of butter and flour acts as a thickening agent, adding body and texture to your cream of celery or mushroom soup. The key to a successful roux lies in patience and precision. Start by melting 2 tablespoons of unsalted butter in a saucepan over medium heat. Once the butter foams and subsides, whisk in an equal amount of all-purpose flour (2 tablespoons) until a smooth paste forms. Cook this mixture, stirring constantly, for 2–3 minutes to eliminate the raw flour taste. This light roux will give your soup a subtle thickness without altering its color. For a nuttier flavor and deeper hue, extend the cooking time to 5–7 minutes for a blonde roux, or even longer for a darker, richer profile.
The science behind a roux is fascinating. As the flour cooks in the butter, its starch molecules absorb moisture and swell, creating a gel-like structure that traps liquid and thickens the soup. This process also helps to emulsify fats and liquids, ensuring a smooth, cohesive consistency. When incorporating your roux into the soup, do so gradually, whisking continuously to prevent lumps. Adding a small amount of hot broth to the roux first can help temper it, making it easier to integrate into the larger volume of liquid. This technique, known as "making a slurry," ensures a seamless blend without clumping.
While making a roux is straightforward, there are a few pitfalls to avoid. Overheating the butter before adding the flour can lead to a burnt flavor, so keep a close eye on the pan. Similarly, adding too much flour at once can result in a lumpy mixture that’s difficult to smooth out. If you encounter lumps, don’t despair—simply strain the roux through a fine-mesh sieve before adding it to your soup. Another common mistake is rushing the cooking process. A roux needs time to develop its full thickening power and flavor, so resist the urge to hurry. Patience here is rewarded with a soup that’s luxuriously creamy and perfectly balanced.
For those seeking a lighter alternative, consider using a combination of butter and olive oil for a healthier roux. This not only reduces the saturated fat content but also adds a subtle fruity note to the soup. If you’re catering to dietary restrictions, a gluten-free roux can be made using rice flour or cornstarch, though these alternatives may yield a slightly different texture. Experimenting with these variations allows you to tailor the soup to your preferences while still achieving that coveted creamy consistency.
In the grand scheme of soup-making, mastering the roux is a game-changer. It’s a technique that elevates your dish from ordinary to extraordinary, turning simple ingredients into a comforting, restaurant-quality meal. Whether you’re crafting a cream of celery soup with a hint of nutmeg or a mushroom soup infused with thyme, the roux is your secret weapon. With practice, you’ll find that this humble mixture of butter and flour becomes second nature, unlocking endless possibilities in your culinary repertoire.
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Simmering Broth: Add stock, simmer until vegetables soften, then blend for smooth texture
The simmering broth stage is where your cream of celery or mushroom soup truly comes to life. This step transforms raw, crunchy vegetables into a tender, flavorful base that will later be blended into silky smoothness. Adding stock to your sautéed vegetables initiates a gentle cooking process that extracts their natural sugars and deepens their savory notes. The key here is patience: simmering over medium-low heat allows the vegetables to soften without losing their essence to overcooking. Aim for 20-25 minutes, or until a fork easily pierces the celery or mushrooms. This stage is also an opportunity to infuse additional flavor by using homemade stock or adding herbs like thyme or bay leaves directly to the pot.
Consider the liquid-to-vegetable ratio as you simmer. For every 2 cups of chopped celery or mushrooms, use 3-4 cups of stock to ensure enough liquid for blending while maintaining a rich, concentrated flavor. If you’re using store-bought stock, opt for low-sodium varieties to control the saltiness of your final soup. For a creamier result without adding dairy, reserve 1 cup of the simmering liquid before blending and stir it back in afterward to adjust consistency. This technique also prevents the soup from becoming too thin if you’ve added extra stock.
Blending is the transformative finale of this process. Once the vegetables are tender, remove the pot from the heat and let it cool slightly for safety. Use an immersion blender for convenience, or transfer the mixture in batches to a countertop blender, ensuring the lid is vented to release steam. Blend until the soup is smooth, with no visible chunks of vegetables remaining. For an extra velvety texture, pass the blended soup through a fine-mesh sieve or chinois to remove any fibrous bits. This step is optional but elevates the soup’s mouthfeel, especially if serving it as an elegant starter.
A common mistake at this stage is rushing the simmer or over-blending. Undercooked vegetables will leave your soup gritty, while over-blending can incorporate too much air, making the texture foamy rather than creamy. If you’re using mushrooms, which release moisture as they cook, monitor the liquid level and adjust as needed to avoid a watery base. For celery, which is naturally milder, consider adding a pinch of sugar or a splash of dry sherry during simmering to enhance its sweetness without overpowering the broth.
In essence, simmering and blending are the backbone of your cream of celery or mushroom soup. They require attention to detail but yield a deeply satisfying result. By controlling the simmer time, liquid ratio, and blending technique, you can achieve a soup that’s both comforting and refined. Whether you’re preparing a weeknight dinner or a dinner party appetizer, mastering this stage ensures your soup stands out for its texture and flavor.
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Finishing Touches: Stir in cream, season to taste, and garnish with herbs for serving
The final moments of crafting a cream of celery or mushroom soup are where the magic happens, transforming a simple blend into a luxurious, restaurant-worthy dish. Stirring in cream is not just about adding richness; it’s about balancing texture and flavor. For every 4 cups of soup, start with ½ cup of heavy cream, whisking gently to avoid curdling. This step should occur off the heat to preserve the cream’s delicate consistency. If you prefer a lighter version, substitute with half-and-half or a splash of whole milk, though the mouthfeel will be less velvety. The cream acts as the glue that ties the earthy notes of celery or mushrooms together, creating a harmonious finish.
Seasoning to taste is an art that demands attention to detail. Begin with a pinch of salt and a grind of black pepper, then taste—really taste—before adjusting. Celery soups benefit from a hint of nutmeg (a mere ⅛ teaspoon for 4 cups) to enhance their natural sweetness, while mushroom soups shine with a dash of soy sauce (1 teaspoon) for umami depth. Acid is your secret weapon here: a squeeze of lemon juice brightens both soups, cutting through the cream’s richness. Remember, seasoning is cumulative, so add in small increments, allowing flavors to meld for a minute before reassessing.
Garnishing with herbs is the visual and aromatic punctuation that elevates the dish. For celery soup, finely chopped chives or parsley add a fresh, herbal contrast to the soup’s subtle sweetness. Mushroom soup, on the other hand, pairs beautifully with thyme or dill, their earthy and slightly anise notes complementing the fungi’s depth. Toast a handful of breadcrumbs in butter and sprinkle them over the top for added texture, or drizzle a few drops of truffle oil for a decadent touch. The goal is to create a multi-sensory experience—a dish that looks as good as it tastes.
Practicality matters in these finishing touches. If serving immediately, garnish just before plating to preserve freshness. For make-ahead soups, store garnishes separately and add at the last minute, as herbs can wilt and breadcrumbs soften. Cream-based soups reheat well but require gentle stirring to reincorporate any separated liquid. When reheating, avoid boiling, as this can cause the cream to curdle or the soup to lose its silky texture. These small steps—measured cream, thoughtful seasoning, and deliberate garnishing—are what distinguish a good soup from an unforgettable one.
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Frequently asked questions
The basic ingredients include butter or oil, onions, garlic, celery or mushrooms, flour, chicken or vegetable broth, heavy cream, salt, and pepper. For celery soup, fresh celery is essential, while for mushroom soup, a variety of mushrooms like button, cremini, or shiitake can be used.
To achieve a smooth, creamy texture, cook the flour in butter (making a roux) until it’s fully incorporated and no longer raw. Gradually whisk in the broth to avoid lumps. For an extra smooth finish, blend the soup with an immersion blender or transfer it to a regular blender.
Yes, you can make it dairy-free by substituting butter with olive oil or a dairy-free alternative, and replacing heavy cream with coconut cream, cashew cream, or unsweetened almond milk. Adjust the seasoning to balance any added flavors from the substitutes.
Homemade soup lasts 3–4 days in the refrigerator when stored in an airtight container. It can also be frozen for up to 2–3 months. Thaw it overnight in the fridge and reheat gently on the stovetop, adding a splash of broth or cream if needed to restore consistency.

























