The recipe for ebony juice in this game is ebony and licorice.

The ebony juice recipe in "There is a Family Deep in the Peach Garden" uses ebony plum and licorice because these two ingredients have good pharmacological effects. Black plum has the effects of astringing, promoting fluid production, relieving roundworms and repelling parasites, and can be used to treat symptoms such as chronic cough, deficiency heat and polydipsia.

Licorice has the functions of nourishing the spleen and replenishing qi, clearing heat and detoxifying, relieving cough and reducing phlegm, etc. It is often used to treat symptoms such as sore throat and food poisoning.