Despite telling the general population that the purchasable character-flavored teas in Deltarune Chapter 2 will turn into “Rotten Tea” items in future chapters, Toby Fox must have forgotten to mention the change to the game’s bug testing team. According to Fox, the team recently found the Rotten Tea and asked him if it was a bug:
To be fair, game elements that change without prior notice usually classify as bugs. The character-flavored teas are complex items that not only restore different amounts of HP depending on the name of the tea and to whom it is given, but also have bits of dialogue attached that are dependent on the aforementioned factors. Anyone unfamiliar with how Toby Fox’s mind works would be forgiven for thinking that a complex item suddenly turning into a simple, 10HP-restoring “Rotten Tea” is a bug.
Deltarune Chapter 3 and 4 are set to be released sometime in 2025.
