Munkoyo

Munkoyo  or ibwatu is a popular drink in rural Zambia. It is a mildly fermented drink made from maize porridge and pounded Rhynchosia venulosa (known locally as munkoyo) roots. This mixture is then boiled. It can then be drunk immediately after it is made or allowed to ferment for several days. It is often called "sweet beer" by Zambians. It is also found in central African countries like Congo where it is used as a drink in traditional ceremonies as well as an ordinary beverage.

Munkoyo is known to have positive health effects, including promoting a healthier gut microbiome and vitamin B.

Health incidents
While collecting munkoyo roots, some root harvesters also remove poisonous roots. This has caused several incidents of dozens of people being hospitalized. One such incident happened in Solwezi District, hospitalizing 17 and killing 2, and another incident near Kitwe which hospitalized 98.