Here are 2 food items, exclusive to Tokyo Joypolis. At left is a blue tin with 2 different modern Sonic arts. The lid is edged with stars & has a Sonic portrait. It has "Sonic" and "Joypolis" written in a blocky font. What is inside these tins? Write in if you know...
At right are tube shaped cardboard containers of "Sonic Chocolate Crunch". It has a neo-classic standing arms-crossed Sonic, & red stripe background. (look how big the black pupil is, this neo-classic art makes him look slightly off) But what exactly is the crunch in 'chocolate crunch'? 

Here's a better look at the Sonic Tokyo Joypolis Chocolate Crunch. This time...in a tin?
Tokyo's Joypolis is apparently still selling Chocolate Crunch, even after it's been out for several years. (Must be a success!) The old container (On Gear Food 1) was reported to be cardboard with a plastic lid, but looked like this. This one, however, is supposed to be a thin metal tin with a metal lid. Same food, new container? Probably.
The crunch itself is said to be cereal-like puffs, with a "Nesquick" type flavor. Nestle's chocolate powder that goes in milk to drink has a certain 'cocoa-style' smell, and so did Nesquick cereal. This stuff is supposed to be similar, but of better quality. That makes sense because Japan usually selects only for really good quality chocolate while places like America choose the worst.

Photo by Hardclear