Blackroot

Blackroot was a rejuvenating beverage, brewed from boiled blackroot. Drinking blackroot was thought to replenish the body, and was, at times, offered to individuals after a long journey. Shamans of the Nightsisters—a clan of dark side-wielding witches from the Outer Rim world of Dathomir—were capable of conjuring goblets of blackroot using the power of raw spirit ichor, the alchemical base of all magic performed by the witches. The leader of the of the Nightsister coven in the years leading up to the Clone Wars, Mother Talzin, touched upon the ability to summon blackroot through the use of spirit ichor in her Nightsister manifesto, "Wild Power," noting it to be a blessing of the Winged Goddess.

After the presumed death of his one-time apprentice, Asajj Ventress, Separatist leader Count Dooku traveled to Dathomir in search of a replacement. There, he was received by Mother Talzin at the Nightsisters' lair, and offered a goblet of blackroot the shaman conjured for him in order to replenish himself after the journey from distant Serenno.

Text and facts from the “Blackroot/Legends” article on Wookieepedia, licensed under CC BY-SA 3.0. Modified for this site.