A wonderful food blog that I follow is www.omnomicon.com. I found this super simple recipe for making butter..... from SCRATCH!
And to my surprise it didn't take hours of *shake*shake*shakin*
Here is the link to the Omnomicon post.
It helps if you shake the cream in a some what rhythmical way, so if your having trouble findin the beat why don't you give Emmett's Simply Butter 2 mix a listen.
Posted By Cherisse