Use these beautiful chips to garnish our Grapefruit Mimosas.
Preheat oven to 175 degrees. Line two baking pans with Silpats. With a very sharp knife, slice grapefruit into 1/16-inch-thick slices. Place slices on prepared baking pans.
Place confectioners' sugar in a strainer; sprinkle over grapefruit. Turn chips over, and coat with remaining sugar. Bake until chips glisten and have a syrupy coating, 1 1/2 to 2 hours.
Remove baking pans from oven; with tongs, turn chips over. Return baking pans to oven, rotating shelves. Cook until lightly golden and crispy, 1 1/2 to 2 hours. Transfer chips to rack to cool and harden.
Do not worry about the seeds; they look pretty in these chips.