Mushroom Barley Soup

Featured in: Everyday Comfort Meals

This comforting soup brings together the deep umami flavor of rehydrated shiitake mushrooms with meaty fresh white mushrooms and nutty pearl barley. The vegetables create a classic mirepoix base, while herbs like thyme and parsley add aromatic depth. After simmering for about an hour, the barley becomes tender and the broth thickens naturally. Perfect for cold weather, this vegetarian dish delivers that satisfying deli-style richness while remaining completely dairy-free.

Updated on Wed, 28 Jan 2026 10:18:00 GMT
A steaming bowl of mushroom barley soup, showcasing tender pearl barley and sliced mushrooms in a savory broth, garnished with fresh parsley. Pin it
A steaming bowl of mushroom barley soup, showcasing tender pearl barley and sliced mushrooms in a savory broth, garnished with fresh parsley. | soupbuffer.com

The first time I made mushroom barley soup was on a chilly autumn Sunday, with raindrops tapping against the kitchen window. I'd just returned from the farmers market with a basket of pristine white mushrooms and suddenly remembered the package of dried shiitakes hiding in my pantry. Something about the earthy aroma that filled my kitchen as the mushrooms rehydrated transported me instantly to the Jewish deli my grandfather would take me to as a child, where steaming bowls of this hearty soup were served alongside warm rye bread.

Last winter when my neighbor was recovering from surgery, I brought over a container of this mushroom barley soup. His wife called me later that evening, voice filled with emotion, saying it was the first time hed eaten a full meal in days. There was something about the simplicity and warmth of this soup that provided comfort beyond just nourishment. That moment cemented this recipe as one of my favorite gifts to share with people going through difficult times.

Ingredients

  • Dried shiitake mushrooms: These little flavor bombs create the foundation of the soup, and the soaking liquid becomes a powerful umami-rich stock that elevates the entire dish.
  • Pearl barley: I learned through trial and error to rinse it thoroughly to remove excess starch, which helps keep the soup from becoming too cloudy or gummy.
  • Fresh white mushrooms: They provide textural contrast to the chewy shiitakes and absorb all the wonderful flavors of the broth.
  • Vegetable broth: Use low-sodium so you can control the salt level yourself, especially important since the mushrooms already bring natural savory notes.
  • Bay leaves: These humble dried leaves work quiet magic in the background, adding subtle depth that you definitely miss when they're absent.

Instructions

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Rehydrate the shiitakes:
Place the dried mushrooms in a heatproof bowl and cover with boiling water, watching as they slowly unfurl and transform. After 20 minutes, they'll be plump and soft, ready to release their earthy essence into your soup.
Build the flavor base:
Heat olive oil in your largest soup pot and add the diced onion, carrots, and celery, letting them sweat and soften until they become translucent and aromatic. Your kitchen should start smelling like comfort already.
Add the garlic and mushrooms:
Stir in minced garlic until fragrant, then add both types of mushrooms and listen for that satisfying sizzle. As they cook, they'll release their moisture and begin to shrink, concentrating their flavor.
Create the soup:
Pour in that precious mushroom soaking liquid (strained to remove grit) along with the barley and vegetable broth. This is where patience becomes an ingredient as everything melds together over a gentle simmer.
Let it simmer:
Cover and allow the soup to bubble gently for nearly an hour, during which time the barley will absorb liquid and expand, thickening the soup naturally. The aroma will draw everyone to the kitchen long before it's ready.
Finish and serve:
Remove those bay leaves, adjust the seasonings to your taste, and ladle into deep bowls. I love watching the steam rise as I sprinkle fresh parsley over each serving.
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Mushroom barley soup simmering in a pot, featuring rehydrated shiitakes and fresh white mushrooms alongside diced carrots and celery in a hearty, aromatic broth. Pin it
Mushroom barley soup simmering in a pot, featuring rehydrated shiitakes and fresh white mushrooms alongside diced carrots and celery in a hearty, aromatic broth. | soupbuffer.com

I'll never forget serving this soup at a casual dinner party where one guest, a self-proclaimed mushroom hater, took a reluctant taste to be polite. The look of surprise that crossed his face as the flavors registered was priceless. By the end of the night, he was asking for the recipe and confessing that perhaps he'd been wrong about mushrooms all along. Sometimes the simplest foods have the power to change minds and create connections where there were none before.

Storing and Freezing

This soup actually improves over the first few days as the flavors meld and deepen, making it perfect for meal prep or batch cooking. I often portion it into individual containers after cooling completely, then refrigerate for up to 4 days or freeze for up to 3 months. When reheating from frozen, I've found that thawing overnight in the refrigerator produces the best texture, allowing the barley to maintain its pleasant chewiness rather than becoming mushy.

Variations to Try

Sometimes I transform this into a heartier main dish by adding a handful of shredded rotisserie chicken or some smoked turkey during the last 10 minutes of cooking. For a more substantial vegetarian version, white beans make a wonderful protein-rich addition that complements the earthy mushrooms beautifully. The beauty of this soup lies in its versatility - it welcomes adaptation based on whatever ingredients you have on hand or whatever your dietary preferences might be.

Serving Suggestions

While this soup is certainly hearty enough to stand alone as a meal, there's something special about pairing it with the right accompaniments to create a complete dining experience. A slice of dark rye bread with a smear of good butter makes for the most traditional companion, evoking the classic deli experience that inspired my love for this soup in the first place.

  • For a more substantial meal, serve alongside a simple green salad dressed with a bright vinaigrette to cut through the richness of the soup.
  • If you're feeling indulgent, a grilled cheese sandwich made with gruyere and a touch of grainy mustard creates a spectacular dunking vehicle.
  • Keep garnishes simple but impactful - a dollop of sour cream, extra fresh herbs, or even a light drizzle of good olive oil can elevate each bowl.
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Close-up of mushroom barley soup in a rustic bowl, steam rising from the thick, savory broth filled with barley, mushrooms, and fresh parsley garnish. Pin it
Close-up of mushroom barley soup in a rustic bowl, steam rising from the thick, savory broth filled with barley, mushrooms, and fresh parsley garnish. | soupbuffer.com

This mushroom barley soup has become my personal ambassador of comfort, speaking a universal language that requires no translation. Whether you make it for yourself or someone you care about, it carries within its humble ingredients the power to nourish body and spirit alike.

Recipe FAQs

Can I make this soup ahead of time?

Absolutely. This soup actually tastes better the next day as flavors meld together. Store in the refrigerator for up to 4 days. The barley will continue absorbing liquid, so add extra broth when reheating.

Is pearl barley gluten-free?

No, pearl barley contains gluten. For a gluten-free version, substitute with quinoa, brown rice, or buckwheat groats. Adjust cooking time accordingly as these grains cook faster than barley.

Can I freeze this soup?

Yes, freeze for up to 3 months in airtight containers. Leave some headspace as liquid expands when frozen. Thaw overnight in the refrigerator before reheating.

What can I serve with mushroom barley soup?

Crusty rye bread makes a classic deli accompaniment. A simple green salad with vinaigrette balances the heartiness. For extra protein, add a slice of sharp cheddar on the side.

Why strain the mushroom soaking liquid?

Dried shiitakes often retain sand or grit from harvesting. Straining through cheesecloth or a fine sieve removes these particles while preserving all the flavorful liquid that adds depth to your broth.

Can I use other types of mushrooms?

Certainly. Cremini, portobello, or wild mushrooms like porcini work wonderfully. Mix varieties for complex flavor. Adjust quantities to maintain the mushroom-to-barley ratio.

Mushroom Barley Soup

A warming bowl filled with earthy mushrooms, chewy barley, and aromatic vegetables in rich broth.

Prep Time
20 minutes
Time to Cook
70 minutes
Overall Time
90 minutes
Created by Audrey Taylor


Skill Level Easy

Cuisine Type American Deli

Makes 6 Portions

Diet Preferences Plant-Based, No Dairy

What You'll Need

Mushrooms

01 1 oz dried shiitake mushrooms
02 8 oz white mushrooms, sliced

Grains

01 3/4 cup pearl barley, rinsed

Aromatics & Vegetables

01 2 tbsp olive oil
02 1 medium onion, diced
03 2 medium carrots, diced
04 2 celery stalks, diced
05 3 garlic cloves, minced

Broth & Seasonings

01 8 cups low-sodium vegetable broth
02 2 bay leaves
03 1 tsp dried thyme
04 1 tsp dried parsley
05 Salt and freshly ground black pepper, to taste

Garnish

01 2 tbsp fresh parsley, chopped

Steps

Step 01

Rehydrate dried mushrooms: Place dried shiitake mushrooms in a heatproof bowl and cover with 2 cups boiling water. Let soak for 20 minutes. Drain, reserving the soaking liquid, and slice the mushrooms. Strain the soaking liquid through a fine-mesh sieve to remove grit.

Step 02

Sauté base vegetables: Heat olive oil in a large soup pot over medium heat. Add onion, carrots, and celery, sautéing for 5 minutes until softened.

Step 03

Add aromatics: Add minced garlic and cook for 1 minute until fragrant.

Step 04

Cook mushrooms: Stir in fresh mushrooms and rehydrated shiitake mushrooms. Cook for about 5 minutes until mushrooms begin releasing their juices.

Step 05

Build the broth: Add pearl barley, reserved mushroom soaking liquid, and vegetable broth. Stir in bay leaves, thyme, parsley, salt, and pepper.

Step 06

Simmer until tender: Bring to a boil, then reduce heat to low. Cover and simmer for 50 to 60 minutes, stirring occasionally, until barley is tender.

Step 07

Finish and season: Remove bay leaves. Taste and adjust seasoning as needed.

Step 08

Serve: Ladle soup into bowls and garnish with fresh parsley. Serve hot.

Tools Needed

  • Large soup pot
  • Heatproof bowl
  • Fine-mesh sieve or cheesecloth
  • Ladle
  • Cutting board and knife

Allergy Info

Review all components for allergens and talk to your health provider if unsure.
  • Contains gluten from barley
  • Free from dairy, eggs, nuts, and soy
  • If using store-bought broth, check labels for potential allergens

Nutrition Details (per portion)

Details are for general guidance. Always seek expert healthcare advice.
  • Energy: 175
  • Fats: 4 g
  • Carbohydrates: 32 g
  • Proteins: 5 g