Heat oven to 325°F.
In large bowl, stir together flour, sugar, rind and salt. With pastry blender, cut in butter until crumbs form; stir in yolks until blended. Work with hands to form ball. For each tassie, roll rounded teaspoon dough into a ball; press in bottom and up sides of 1-3/4-inch muffin tin.
In large bowl, with fork beat egg whites slightly; stir in cornstarch, lime juice and condensed milk until blended. Stir in coconut and cherries. Spoon 1 rounded teaspoon into each prepared tart shell.
Bake in 325°F oven 25 minutes or until filling is set. Cool on rack 10 minutes; gently remove from pans to rack. Cool.