Well Kefir is a good example of a fermented milk drink that more people should consume, instead of regular milk, really. It's got a nice bonus that any one can ingest it, including lactose-intolerant people.
Well, kefir should really be made with unpasteurised milk the commercial ones are pasteurised.
that's unpasteurized Yak and Cattle milk to get technical :)
Only the original recipe, which is made from unpasteurised goat's milk. The store-bought ones have practically no relation to the real thing in either micronutrient distribution, lactose quantity, or taste.
Hehehe You can do it with plant-based milk too, don't worry.
There's water kefir, which can be made without milk.