Eu, the traditional Toto beverage, is got from the following primary ingredients: marua, water, rice powder, and malt. Marua is the principal ingredient that provides an inimitable taste and also serves as a reservoir of some important nutrients. Water is needed for fermentation, rice powder gives smoothness and helps with fermentation, while malt provides some more fermentable sugars, thereby facilitating fermentation. Thus, these ingredients yield a mildly sour and nourishing drink well integrated with the culinary practices and cultural history of the Toto community.

Eu is the traditional fermented beverage that the Toto tribe cherishes, for its exquisite flavour and nutritional benefits. The drink, mostly prepared with the marua or minor millet, speaks of the agricultural practices of the tribe and a strong attachment to local crops. The fermentation process not only adds flavour but also helps the growth of good microorganisms, making it a healthful choice. Eu is therefore much more than a drink; it is a cultural expression representing community and early times of the Toto people.

To make Eu, marua is cleaned and soaked in water for a number of hours, after which it is ground to a coarse paste to be mixed with water, rice powder, and malt. The moistened paste is then set under warm conditions for a few days for natural fermentation. The fermentation process is delicately regulated as it determines flavour and carbonation for the beverage. Once fermentation is complete, Eu is ready to be served, mostly icy cold since this enhances its refreshing nature.

Eu is culturally significant to the Toto tribe and is prepared during ceremonial occasions, festivals, and everyday events. It is a refreshment during communal gatherings; its manifestation expresses hospitality and unity among practitioners. The drink has functions in rituals and celebrations, strengthening social cohesion and shared traditions. In daily life, the drink emphasizes not only sustenance but also hydration for the Toto people. Thus, Eu serves as a stronghold of the tribe's cultural identity and communal manifestations.

Marua, or minor millet, is the outstanding ingredient in the making of Eu; it is a staple in the Toto diet and also represents the agricultural culture of this tribe. Marua is valued because of its tolerant and adaptable nature to the local environment, and as such it is very dear to the community. The distinct flavour from this peculiar grain, largely set apart by its contribution to the taste of Eu, gives a character to the drink outshining almost all other fermented beverages. The use of marua represents the Toto tribe's great environmental knowledge and the sustainable use of local materials.