Omija-cha

Omija-cha or magnolia berry tea is a traditional [Korean tea] made from dried Schisandra berries—omija in Korean. Omija means "five flavors", which are sweetness, sourness, bitterness, saltiness, and pungency. The tea can be made by boiling dried magnolia berries in water on low heat, then adding honey. Alternatively, ground magnolia berry seeds can be added to cold water to make the tea.
Omija-cha, served either hot or cold, is also used to make omija-hwachae.
Omija-cha is often served as traditional medicine, as it is said to improve blood circulation and kidney function, among others.