You can eat it raw (I would assume cooked is better though), I have seen people do it on t.v. Google British chef/foot writer Hugh Fearnley Whittingstall who famously made a pacenta pate for a new mother and joined in the eating of it on his show T.v dinners.
Here's his Wikipedia entry which mentions it:
http://en.wikipedia.org/wiki/Hugh_Fe...-Whittingstall