Unlockable characters and costumes through Dash Food are found at various Yoshi's locations in the game world. Various food ...

Panel can be reached from the Toad's Factory start line. Fast travel there, then turn left past the start line to find a Yoshi's Diner selling Yoshi Snacks. Behind it will be a sloped blue wall ...

Panel is at the very end / start of the Peach Stadium circuit. The opening straight is comprised of a highway that runs north to a Yoshi Diner roundabout and towards the Power Star lake.