Being a vegetarian was a special challenge on our trip. It was difficult in Russia, where the food plan often enough was reduced to pizza margherita and pancakes. It was even more difficult in China, where the idea of having any food without meat seems to be widely unknown and the choice was often enough reduced to french fries from american fast food companies.
But there was also a surprise: It was absolutely no problem in Mongolia - in sharp contrast to everything I've read before. Traditional mongolian food is very meat-oriented. But Ulaanbaatar has a density of vegetarian and vegan restaurants definitely higher than in Berlin. And even the little border town Zaamin-Üüd has a vegetarian café. Unlike one may expect, I never had the impression that they were primarily focussed to tourists. We even once were in a vegetarian restaurant in Ulaanbaatar that had only a mongolian menu without any english translation.
Most of those restaurants seem to be somewhat related to the "spiritual leader" Supreme Master Ching Hai. I don't know that much about her and her group, so I can't judge how problematic I find that (though I'm always sceptical both about leaders and about esoteric groups). Their arguments for veganism are mainly about the greenhouse gas emissions and climate change effects from meat productions, which is absolutely correct, but sadly their stated numbers are just wrong.