Sweet Potato and Plantain in a Sauce of Fresh and Roasted Coconut

My sister-in-law Geeta is a great cook. She is a “foodie” in the true sense. She knows where to go for the best of the best. Her Keralite specialties—vegetarian offerings from her upbringing—pepper her kitchen, much to her husband’s and son’s satisfaction. This curry, reserved for special gatherings, is a harvest-season favorite and consumes a bit more of her time in the kitchen. “Because the coconut [a must in many of her dishes] is used in multiple ways to create the sauc