[kosko]

Its a ancient tradition. From way way way back in Pagen tribes Men we're supposed to drink period blood as a means of respect. It was supposed to symbolize renewing life and honor. Even today when you go to a church and drink the wine it is supposed to symbolize this NOT Jesus's blood. Men we're expected to go into battle and draw blood, but this was not always guaranteed or warranted, only when necessary so the drinking of blood was a means of honor that could be consistent outside the field of battle. BUT they to eventually started to use wine to symbolize this instead, I am not sure how far back they made the switch but my guess it just got to funky and gross.