Red Nectar

Flower nectar obtained from a red flower. It changes the form of a certain species of Pokémon.

You can purchase Red Nectar from any Delibird Presents Store once you have at least 3 Gym Badges.

Red Nectar, and the other colors, are used to change the form of Oricorio which, in turn, changes its type.
Red Nectar is needed to change it to the Baile Style, which is a Fire and Flying type.