Eu is a traditional fermented beverage for the Toto tribe known for its uncommon flavour and nutritional benefits. The beverage is primarily made from marua, a minor millet, enhancing the agricultural practices of the tribe with a deep cultural-spiritual connection to their local crops. The fermentation process enhances flavour and perpetuates beneficial microorganisms, thus giving the beverage health benefits. More than a drink, eu is a cultural symbol representing the fellowship and heritage of the Toto people.

While various ingredients can be used for malting, the primary ones for the manufacture of Eu are marua (minor millet), water, rice powder, and malt. Marua gives unique flavour and nutrients to the beverage, while water is important for fermentation; rice powder adds to the smoothness and assists fermentation. Natural sugar provided by malt is important for starting fermentation. When mixed together, it constitutes a palatable slightly sour drink, very much a part of the Toto diet and culture.

The unifying ingredient of Eu is marua, or minor millet, which not only happens to be the staple in the Toto diet but is also representative of their agrarian heritage. Marua is appreciated for its strength and capacity to survive in local conditions, and it is a crop that the community cannot do without. Its distinctive flavour profile makes Eu have a unique taste, which differentiates it from other fermented drinks. The application of marua shows the Toto tribe's extensive understanding of their environment and their dedication to the sustainable use of local resources.