Here’s how it works: The plain or ultra-high temperature milk is in a small, sealed bottle of its own. The cereal is in a disposable, four-wall bowl with a membrane sealing the top. A side port receives the neck of the milk bottle. The bottle twists into the port, breaking the seal between chambers and allowing the milk to pour in. The seal can be peeled back and the cereal can be enjoyed, either with a spoon or by slurping through a spout, with the bottle functioning as a handle.