Curried Couscous

Name: Curried Couscous
Ingredients: 1 1/2 cups couscous; 1 tablespoon unsalted butter; 1 1/2 cups boiling water; 1/4 cup plain yogurt; 1/4 cup good olive oil; 1 teaspoon white wine vinegar; 1 teaspoon curry powder; 1/4 teaspoon ground turmeric; 1 1/2 teaspoons kosher salt; 1 teaspoon freshly ground black pepper; 1/2 cup small-diced carrots; 1/2 cup minced fresh flat-leaf parsley; 1/2 cup dried currants or raisins; 1/4 cup blanched, sliced almonds; 2 scallions, thinly sliced (white and green parts); 1/4 cup small-diced red onion