Grapefruit Pound Cake: The tiny tool that will help you make this dessert

When you've been out grocery shopping, have you noticed some strange citrus fruits in the produce section? Our Gygi friends tell us it's because spring is the season for citrus! Make the most of it by whipping up this fancy dessert.Candace Heward educates us on citrus fruits, and shares how to make a glorious grapefruit pound cake.