INGREDIENTS
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4 tablespoons salted butter, divided
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1 garlic clove, finely chopped
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1 1/2 cup Israeli or pearl couscous
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1/4 cup dry white wine
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3 1/2 cups chicken or vegetable broth
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12 ounces asparagus (3/4 bunch), trimmed and cut into ½-inch pieces
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1/4 cup finely grated Pecorino
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1/2 cup chopped pistachios, toasted if desired
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1/4 cup roughly chopped chervil leaves