In the bustling markets of the Caribbean islands, plaid-clothed vendors call out in singsong voices to advertise thick slices of pepper-strewn fish, warm fritters, and sweet coconut confections. Blending African, Indian, Chinese, and Amerindian influences, Caribbean cooking is as richly complex as the people who live there. In ISLAND COOKING, native Jamaican Dunstan A. Harris has collected a sampling of tantalizing spark-and-spice recipes from each...