We made butter for our science project today. The girls shook this container of fresh cream (I put it in a sour cream container in case you can read that it says "sour cream" on the container) for about ten seconds each. When it became obvious that I was the only one who intended to do "my share" of the 20 minutes of shaking required I put it in the food processor instead. We were all just as impressed (I think) and I added some honey to the butter for a different taste than what we buy in the store. It was really good and I didn't realize how simple it is to make butter until now.