When you are eating a hot dish such as a jerk marinade, you need a cooling dish to counter the heat. I like coconut rice with a sweet element like the mango, I dressed with with a lime vinaigrette ~ it was just the right amount of sweet, tang and crunch to go with the fish.
How about a crispy meringue layer cake, stuffed with blackberry and dried cherry compote and gussied up with coconut whipped cream? It could be sanctioned, if you either left off the coconut whipped cream or seriously limited it ... your choice! Either way ~ it's a gorgeous cake with lots of great flavor and fun, won't last long!