Hm? My host made them earlier. The basic treat is called a "brownie", but Ryou added in a few special things. From the packets, I think he added in marshmallows, caramel, and an alarming amount of sugar. If you ask him, he'll probably supply you with more later.

[Clatter clatter... How does this kettle work again? Oh, that's right, he's not put enough water in. That's why it's making weird noises.]