In a bowl, mix fruits, sugar, lime juice, mint and cayenne (if you are adding heat). Cover and refrigerate a couple of hours before serving. You can also do this the night before and the flavors can blend completely!
Prepare and preheat grill. I did use some foil on my grill but spraying with cooking spray is okay as well.
Slice angelfood cake horizontally, place cut side down on grill.
Grill for about 30-60 seconds or until light golden brown. Carefully flip cake and grill for another 30-60 seconds until golden brown. DO NOT LEAVE CAKE UNATTENDED, IT WILL BURN FAST!!!
Cut cake into about 8 pieces, top with fruit salsa and a scoop of sherbet.