Fresh mango (peeled and chopped) can be used instead of jarred, but make sure the mango is ripe for the most flavorful cupcakes. If it doesn’t yield to pressure when pressed, let it ripen at room temperature.
To toast coconut, sprinkle in ungreased heavy skillet. Cook over medium-low heat 6 to 14 minutes, stirring frequently until browning begins, then stirring constantly until golden brown.
Crystallized ginger is candied, sugared ginger and available in the spice section.