This has been bugging me for ages and I feel like youāre the only other blog who would appreciate my conundrum here. Do you think people in the avatar-verse drink cowās milk?
On the one hand the lost lore archive seemingly confirms that cow-pigs produce ādeliciousā milk, but how canon can we really consider that? On the other hand, if you didnāt already know, most humans are lactose intolerant. The gene for lactase persistence (the ability to digest milk past babyhood) originated in the Middle East or Europe and spread from there. Even today East Asia has some of the highest rates of lactose intolerance in the world, and lactase tolerance was virtually nonexistent in North America pre-colonisation. Not drinking cowās milk is the norm for humanity, not the exception, so I just think it would be cool to have at least one fantasy world where the main characters are lactose intolerant and soy milk is the norm.
Granted, given that cheese can be made to be palatable to lactose intolerant people and that there does seem to have been some lactase persistence traditionally in northern Indian and Himalayan regions (at least at a cursory research glance), you would probably expect it to vary by region and culture. Maybe cow-pig milk is consumed in only certain regions and otherwise usually made into cheese. I personally headcanon that air nomads eat sky bison cheese, which might taste similar to chhurpi.
From what I've read, dairy cows aren't native to East Asia, hence the lack of cow milk in most of the traditional cuisine of that region. I would say that cow-pig milk in Avatar might just be a local delicacy unique to the EK town from "Zuko Alone".
However, a predisposition towards lactose intolerance is not necessarily a permanent roadblock to enjoying milk products. Speaking from personal experience, I can generally build up my tolerance for dairy if I make a point of drinking milk every day. However, if I take a break of more than a week, then I have to start the whole process over again.
As for the consumption of other animal milks...
Based off cultural inspiration, the Air Nomads likely had close to 100% lactase persistence. Dairy is a huge part of Tibetan and other Himalayan cuisine. Plus, if Appa is any indication, sky bisons were roughly the size of sperm whales. Assuming there was a sky bison for every nomad, there was probably enough extra milk produced for it to become a staple of the Air Nomad diet.
The Northern Water Tribe probably has some lactase persistence, since they have Mongolian and Sakha cultural influence in addition to Inuit. Both Mongolian and Sakha culture are known for their consumption of mare's milk, both as a drink and as an ingredient in dishes. Plus, the NWT canonically has Buffalo-Yaks, which is a combination of two animals whose milk is commonly consumed in parts of Asia. Lactase persistence might not be as strong in the Southern Water Tribe, who don't seem to have domesticated any milk-producing animals.
The Earth Kingdom probably only has lactase persistence in certain regions, such as the village in "Zuko Alone". This aligns with its primary cultural inspiration, China. While most of China does not have a cheese-making tradition, there are pockets of regional cheeses: cow and goat acid cheeses in Yunnan, fermented cow milk cheeses in Xinjiang, and yak cheeses in the Tibetan and Mongolian autonomous regions. However, on the whole, I think most EK citizens stick to non-dairy milks made from soy, seeds, or nuts.
Finally, there's the Fire Nation. I don't think they drink much milk. In addition to China, the Fire Nation's other major cultural influences are Southeast Asia (Thailand, especially) and Japan. Historically, none of these cultures consumed much animal milk. I think the Fire Nation's choice of milks would be soy, sesame, coconut, or peanut.
