Kvasir was the Norse god whose blood became the first mead, a drink that made a poet out of those who imbibed it. This drink, blood fermented with honey, was the motive for several murders, and wound up in the hands of the god of poets and inspired ecstasy, Odin.
The story of Kvasir is one level another John Barleycorn story – he dies to make mead, just as Barleycorn did to make beer. But there’s clearly more to the story, given that mead bestowed wisdom, just as Kvasir had while alive. He shared freely with all he met, and died for it.