Darth Bane is presented with bloodsoup by Githany.
Bloodsoup was a kind of soup historically consumed by the Sith species. Some scholars have proposed the Sith started eating it following their first contact with the Anzati. It is recorded that around 28,000 BBY, Adas ingested the bloodsoup of his defeated foes as a tribute to their deaths.
During the Ruusan campaign within the larger scope of the New Sith Wars, Darth Bane partook of bloodsoup. After his return from her failed attempt to poison him, Githany gave Bane a bowl of it.
The soup that Githany offered to Darth Bane is not explicitly called bloodsoup within the pages of Darth Bane: Path of Destruction.