Czech Potato and Mushroom Soup
Czech potato and mushroom soup turns low-cost potatoes, earthy mushrooms, and sweet root vegetables into a cozy, savory bowl.
This simple soup is inspired by everyday Czech home cooking. It uses pantry basics, a small amount of butter, and plenty of vegetables to build deep flavor without expensive ingredients.
Why You’ll Love This Recipe
- Deep savory flavor: Mushrooms, onion, garlic, marjoram, and caraway make the broth taste rich and comforting.
- Hearty texture: Tender potatoes and root vegetables make each spoonful filling without cream.
- Budget friendly: This soup stretches affordable vegetables into four generous servings.
- Easy one pot method: You sauté, simmer, season, and serve from the same pot.
Fabian’s Budget & Health Tip: Use a mix of fresh mushrooms and a few dried mushrooms if you have them. Soak the dried mushrooms in hot water, then add the soaking liquid to the pot with the broth. You get deeper flavor for very little money, and the soup stays naturally vegetable packed and satisfying.
Ingredients (Serves 4)
- 2 tablespoons (28 g) butter
- 1 medium onion, finely chopped (150 g)
- 8 ounces mushrooms, sliced (225 g)
- 1 1/2 pounds potatoes, peeled and diced (680 g)
- 2 medium carrots, diced (200 g)
- 1 cup celery root, peeled and diced (150 g)
- 1 cup parsley root, peeled and diced (120 g)
- 3 garlic cloves, minced
- 6 cups vegetable broth (1.4 L)
- 1 teaspoon caraway seeds (2 g)
- 1 1/2 teaspoons dried marjoram (1 g)
- 1 1/2 tablespoons all purpose flour, optional for light thickening (12 g)
- 1 teaspoon fine salt, plus more to taste (6 g)
- 1/2 teaspoon black pepper, plus more to taste (1 g)
Step-by-Step Instructions
1. Prepare the Vegetables
Dice the potatoes, carrots, celery root, and parsley root into small bite size pieces. Keep the pieces similar in size so they soften at the same pace. Slice the mushrooms and chop the onion before you turn on the stove.
2. Sauté the Onion and Mushrooms
Melt the butter in a large soup pot over medium heat. Add the onion and cook for 3 to 4 minutes, until it looks glossy and smells sweet. Stir in the mushrooms and cook until they release their liquid, then keep cooking until the edges turn lightly golden and the pot smells earthy and savory.
3. Add the Root Vegetables, Potatoes, and Caraway
Add the carrots, celery root, parsley root, potatoes, caraway seeds, salt, and black pepper. Stir well so the vegetables pick up the buttery mushroom flavor. Let everything cook for 2 minutes, until the caraway smells warm and nutty.
4. Simmer Until Tender
Pour in the vegetable broth and scrape the bottom of the pot to lift up any browned bits. Bring the soup to a gentle boil, then lower the heat. Simmer for 18 to 25 minutes, until the potatoes break easily with a spoon and the root vegetables taste sweet and tender.
5. Thicken the Soup if Desired
For a lightly thicker soup, whisk the flour with 1/4 cup cold water in a small bowl until smooth. Stir it into the simmering soup slowly. Cook for 3 to 5 minutes, until the broth turns slightly silky. For a flour free option, mash a few potato pieces against the side of the pot and stir them back in.
6. Finish with Garlic and Marjoram
Stir in the minced garlic. Rub the dried marjoram between your fingers as you add it so it smells fresh and herbal. Simmer for 1 more minute, then taste. Add more salt and black pepper until the potatoes, mushrooms, and broth taste balanced.
Expert Troubleshooting & FAQs
Can I use dried mushrooms?
Yes. Use about 1 ounce dried mushrooms (28 g). Soak them in hot water for 20 minutes, chop them, and add them with the fresh mushrooms. Strain the soaking liquid and use it as part of the broth for extra flavor.
Can I skip celery root or parsley root?
Yes. If you cannot find one of them, use more carrots, potatoes, or parsnips. The flavor will change a little, but the soup will still taste hearty and comforting.
How do I keep the flour from clumping?
Always mix the flour with cold water before adding it to hot soup. Whisk until the mixture looks smooth, then pour it in slowly while stirring the soup. Let it simmer so the flour taste cooks out.
Why add garlic and marjoram at the end?
Garlic can turn harsh if it boils too long, and marjoram loses its gentle aroma with long cooking. Adding both near the end keeps the soup bright, fragrant, and Czech in flavor.
Can I make this soup ahead?
Yes. The flavor gets even better after a few hours. Store it in the fridge for up to 4 days. Reheat gently and add a splash of broth or water if the potatoes thicken the soup too much.
Can I freeze it?
You can freeze it, but the potatoes may soften after thawing. For the best texture, freeze it without the flour thickener and stir well while reheating.
Estimated Nutritional Facts
Per serving, based on 4 servings:
- Calories: about 250
- Protein: about 7 g
- Carbs: about 42 g
- Fats: about 7 g
Czech Potato and Mushroom Soup

Ingredients
- 2 tablespoons (28 g) butter
- 1 medium onion, finely chopped (150 g)
- 8 ounces mushrooms, sliced (225 g)
- 1 1/2 pounds potatoes, peeled and diced (680 g)
- 2 medium carrots, diced (200 g)
- 1 cup celery root, peeled and diced (150 g)
- 1 cup parsley root, peeled and diced (120 g)
- 3 garlic cloves, minced
- 6 cups vegetable broth (1.4 L)
- 1 teaspoon caraway seeds (2 g)
- 1 1/2 teaspoons dried marjoram (1 g)
- 1 1/2 tablespoons all purpose flour, optional for light thickening (12 g)
- 1 teaspoon fine salt, plus more to taste (6 g)
- 1/2 teaspoon black pepper, plus more to taste (1 g)
Instructions
- 1. Prepare the Vegetables. Dice the potatoes, carrots, celery root, and parsley root into small bite size pieces. Keep the pieces similar in size so they soften at the same pace. Slice the mushrooms and chop the onion before you turn on the stove.
- 2. Sauté the Onion and Mushrooms. Melt the butter in a large soup pot over medium heat. Add the onion and cook for 3 to 4 minutes, until it looks glossy and smells sweet. Stir in the mushrooms and cook until they release their liquid, then keep cooking until the edges turn lightly golden and the pot smells earthy and savory.
- 3. Add the Root Vegetables, Potatoes, and Caraway. Add the carrots, celery root, parsley root, potatoes, caraway seeds, salt, and black pepper. Stir well so the vegetables pick up the buttery mushroom flavor. Let everything cook for 2 minutes, until the caraway smells warm and nutty.
- 4. Simmer Until Tender. Pour in the vegetable broth and scrape the bottom of the pot to lift up any browned bits. Bring the soup to a gentle boil, then lower the heat. Simmer for 18 to 25 minutes, until the potatoes break easily with a spoon and the root vegetables taste sweet and tender.
- 5. Thicken the Soup if Desired. For a lightly thicker soup, whisk the flour with 1/4 cup cold water in a small bowl until smooth. Stir it into the simmering soup slowly. Cook for 3 to 5 minutes, until the broth turns slightly silky. For a flour free option, mash a few potato pieces against the side of the pot and stir them back in.
- 6. Finish with Garlic and Marjoram. Stir in the minced garlic. Rub the dried marjoram between your fingers as you add it so it smells fresh and herbal. Simmer for 1 more minute, then taste. Add more salt and black pepper until the potatoes, mushrooms, and broth taste balanced.









