Indian-Style Basmati Rice

INGREDIENTS

• 1 1/2 cups basmati rice
• 2 tablespoons vegetable oil
• 1 (2 inch) piece cinnamon stick
• 2 pods green cardamom
• 2 whole cloves
• 1 tablespoon cumin seed
• 1 teaspoon salt, or to taste
• 2 1/2 cups water
• 1 small onion, thinly sliced