Old Gateau is an item in the “Status cures” category (Medicine). It costs ₽350.
In-game descriptions
| Diamond / Pearl · Platinum · HeartGold / SoulSilver · Black / White · Black 2 / White 2 | Old Chateau’s hidden specialty. It heals all the status problems of a single Pokémon. |
|---|---|
| X / Y · Sun / Moon · Ultra Sun / Ultra Moon · Let’s Go, Pikachu! / Let’s Go, Eevee! · Sword / Shield | The Old Chateau’s hidden specialty. It can be used once to heal all the status conditions of a Pokémon. |
Where to find it
Not placed on the atlas maps (so far: Red/Blue and Generation 3).
Sources : PokeAPI (items, item_flavor_text, machines) · atlas · pokeemerald species_info.h