INGREDIENTS
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1 medium onion, chopped
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3 garlic cloves, chopped
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1 teaspoon ground cumin
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1 teaspoon coriander
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1/2 teaspoon ground fennel
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1/4 teaspoon ground fenugreek*
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1/2 teaspoon sweet paprika
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1/2 teaspoon hot paprika
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1/3 cup chopped cilantro leaves and tender stems, plus cilantro sprigs for garnish
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1/2 cup red wine vinegar
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About 1 tsp. kosher salt
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3 to 3 1/2 lbs. leg of lamb, fat and sinew trimmed, meat cut into 1 1/2- to 2-in. cubes (to yield about 2 1/2 lbs.)