"Located near Six Flags Great America, this family-run shop has been in operation since long before the donut trend reached the height of its popularity. Drop in early for a mouthwatering sugar rush before hitting the amusement park. The famous ube donut — only available on the weekends — is made with purple yam, a common ingredient in Filipino cuisine. These little Instagram stars are available in several varieties: With purple frosting, sugar glazing, or coconut shavings." - Jeffy Mai