Strange subject topic, you say? I have to disagree.
I have always wondered, so I googled. I’m going to make my own butter out of the weird cream I have in the fridge. It seems to have been shaken too much before I brought it home from Meijer so using it in my coffee is just creeping me out. So, in the food processor it’ll be going.
Here’s the link I’ll be following the directions from: