"This easy vegetarian soup is surprisingly full flavored (To make it vegan, substitute cooking oil for the butter and ghee.) If you want it more stewlike, use less water; if you want it brothy, use more It keeps well and actually tastes even better a day or two after it is made..."
INGREDIENTS
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2 tablespoons unsalted butter
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2 medium onions, diced
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Kosher salt
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3 medium carrots, diced
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3 celery stalks, diced
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1 teaspoon turmeric powder
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1 tablespoon grated fresh ginger
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1/4 teaspoon cayenne powder
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1/2 teaspoon asafetida (optional)
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2 pounds Yukon Gold or other yellow-fleshed potato, in 1-inch chunks
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1/4 cup roughly chopped cilantro, for garnish
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Lime wedges, for garnish
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2 tablespoons ghee or neutral oil
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4 garlic cloves, minced
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1 teaspoon cumin seeds
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1/2 teaspoon black mustard seeds
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1 small green chile, chopped (optional)