Preparation:
Pour rum over pineapple slices and sprinkle with 1 tsp sugar. Cover and marinate at room temperature for several hours or overnight, stirring occasionally.
Prepare sauce just before serving. In top of double boiler over simmering water, melt together butter and 1/4 cup sugar (don't cook), then stir in 1/4 cup of the rum marinade and the egg yolks. With whisk, beat sauce over simmering water until it thickens, about 4 minutes.
Drain pineapple slices completely and place on individual dessert plates. Pour hot custard sauce over and sprinkle with coconut. Serve immediatel |