Ginger-Lemon Cupcakes

INGREDIENTS

• 3/4 cup butter, softened
• 1 1/2 cups granulated sugar
• 2 eggs, separated
• 1 teaspoon vanilla
• 2 1/2 cups cake flour
• 1 tablespoon ground ginger
• 2 teaspoons baking powder
• 1/2 teaspoon salt
• 1 cup milk
• 1/4 cup butter
• 1/4 cup ReaLemon juice or 1/4 cup fresh lemon juice
• 3 cups icing sugar
• 1 tablespoon chopped candied ginger
• 1/2 cup toasted shredded coconut