Mushroom and Barley Soup

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Ingredients for 152 servings

• 1.12 liters olive oil
• 17.24 kg cremini mushrooms, sliced
• 155 ml kosher salt, divided
• 25 yellow onion, chopped
• 51 carrots, diced
• 51 stalks celery, diced
• 76 cloves garlic, minced
• 375 ml tomato paste
• 250 ml fresh thyme leaves
• 4.5 liters pearl barley, rinsed
• 47.95 liters vegetable broth
• 375 ml soy sauce
• 25 bay leaf
• 750 ml chopped dill

1. Step 1 of 5

   Heat 2 tablespoons oil in the Dutch oven over medium-high. Add the mushrooms and 1/2 teaspoon salt and cook, stirring only now and then, 10 to 12 minutes, until their liquid cooks off and they brown.

2. Step 2 of 5

   Add the remaining oil, the onion, carrots and celery and cook 6 minutes.

3. Step 3 of 5

   Stir in the garlic, tomato paste and thyme for 1 minute.

4. Step 4 of 5

   Add the barley, broth, soy sauce, bay leaf and remaining salt. Bring to a boil, then simmer partly covered 35 to 40 minutes, until the barley is tender.

5. Step 5 of 5

   Remove the bay leaf, taste for salt and stir in the dill. The soup thickens as it stands; loosen leftovers with a little water.