Melt chocolate according to package instructions, or melt slowly in a double boiler until thin. Do not overcook. Remove from heat. Add a pinch of orange zest to the chocolate, if desired and stir. Dip each grape cluster in chocolate to coat, then place on wax paper to cool.
Garnish with mint sprigs if desired. Serve as a side decoration with any kind of cheesecake or custard dessert, or present them as a mini-dessert all on their own. All varieties of fresh California grapes can be used.
No nutritional information available.