Cooks' note:
• Beans, coconut, and mustard seeds may be prepared separately 2 hours ahead and kept at room temperature. Sauté beans with mustard seeds and sprinkle with coconut just before serving.
• Beans, coconut, and mustard seeds may be prepared separately 2 hours ahead and kept at room temperature. Sauté beans with mustard seeds and sprinkle with coconut just before serving.