Kumis

"Kumis, made from milk (often horses milk, but any will work), is a lightly alcoholic beverage favored by nomads."

Kumis is a new type of alcohol added by the Bottling and Booze expansion. It has an incredibly short fermentation period of only 2 days, gives decent nutrition and recreation boosts (0.10 and 15% respectively) and gives a short but minimally detrimental high (2.4 hours of Alcohol Warmth +10 for -2% manipulation) when consumed. Compared to Eggnog and Icecream, it cannot spoil, takes no additional ingredients and provides the same or more recreation and nutrition as both, all while only requiring basic brewing. Cheese, however, provides a 12 hour +5 mood boost when eaten, lasts for 2 years and provides much more nutrition overall, all while taking less time to make, and therefor is probably the better option to make for personal consumption. No milk based byproducts manage to turn any profit, however.

Acquisition
Kumis can either be bought from Alcohol Traders or fermented in Kumis Fermenting Barrels from Kumis Must for 2 days, which is created in batches of 5 from 25 milk at a Brewery, yielding 1 Kumis per Must.

Crops per Barrel
Because Kumis is unique in that its main ingredient cannot be grown, milk can still be collected from animals. It takes 125 milk to fill 1 barrel, or 3.47 cows for an excess of 142.5 milk per quadram or 10.42 goats/yaks for an excess of 52.5 milk per quadram. Goats require less nutrition per milk produced when compared to yaks, but are unsuitable to be pack animals, while cows are unable to be used as pack animals either but produce substantially more milk than either animal both per day and per nutrition.