As you no doubt remember, the three-course bubblegum included tomato soup, roast beef, and blueberry pie. While the rainbow bun is flashy, the ingredients really do recreate that experience with a BL beef patty, popping cheese ("sprinkled with popping candy!"), tomato soup jelly, blueberry and onion jam, and Bar Luca's special Wonka sauce. They don't list potato chips among the ingredients. However, it looks to the untrained but famished eye that there may be some chips involved in this beautiful culinary construction.