INGREDIENTS
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1 cup dried multibean mix or Great Northern beans, picked over and rinsed
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6 cups water
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1 (14-ounce) can whole tomatoes, with juice
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3 cloves garlic, smashed
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2 ribs celery, chopped
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2 medium carrots, chopped
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1/2 medium onion, chopped
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1/2 cup pearl barley
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1 bay leaf
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1 1/2 tablespoons kosher salt, plus additional for seasoning
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2 teaspoons dried Italian herb blend
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Freshly ground black pepper
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1/2 ounce dried porcini mushrooms, optional
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3 cups cleaned baby spinach leaves (about 3 ounces)
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1 cup freshly grated Parmesan
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1 tablespoon balsamic vinegar
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Extra-virgin olive oil