kreeli: "i also believe that some tribes of people still do consume a drink made of fresh blood and milk from cows and yaks and goats."
Traditional fare for rural Masai is indeed a mixture of fresh blood and fresh milk. Blood supplies them with iron since there is not enough in milk. This forms a substantial part of their diet. I believe they ferment this stuff too -- save it for later as well as drink it warm and fresh. They are way ahead of the russian scientists as far as not letting resources going to waste, as they do not kill cattle when they are healthy and young and capable of giving plenty of milk and blood. They simply poke a jugular vein with a hollow reed or something, and do not collect enough blood to make the cow weak. A cow can feed you longer and better if you milk it and bleed it than if you kill it, is their philosophy, and they don't kill their cattle until they start going down in milk and blood production. I don't think they kill male cattle either, until they are fairly old, but I'm not sure. This diet seems to be the traditional diet of many Masai. They eat no vegetables. but they seem to recognize that their cattle are eating their vegetables for them, and are selective about where they graze their cattle.