To make a carton of milk sustainable, the content needs to be changed. Oat drinks are a good alternative, but the transport weight of the water in the prepackaged drinks causes high transport emissions and the Tretra Pak packaging emissions could be significantly reduced. The MYLK vending machine enables the first fresh oat drink preparation in the supermarket. The oat mixture is mixed with water in the supermarket and thus reduces transport emissions compared to packaged oat drinks. Packaging emissions are eliminated as supermarket customers fill up their own bottles.