Buns:

• 1/4 cup apple juice or rum
• 1/2 cup mixed dried fruit
• 1/2 cup raisins or dried currants
• 1 1/4 cups milk, room temperature
• 3 large eggs, 1 separated
• 6 tablespoons butter, room temperature
• 2 teaspoons instant yeast
• 1/4 cup light brown sugar, firmly packed
• 1 teaspoon ground cinnamon
• 1/4 teaspoon ground cloves or allspice
• 1/4 teaspoon ground nutmeg
• 1 3/4 teaspoons salt
• 1 tablespoon baking powder
• 4 1/2 cups King Arthur Unbleached All-Purpose Flour

Topping:

• 1 large egg white, reserved from above
• 1 tablespoon milk

Icing:

• 1 cup + 2 tablespoons confectioners' sugar
• 1/2 teaspoon vanilla extract
• pinch of salt
• 4 teaspoons milk, or enough to make a thick, pipeable icing