This recipe is more for fun than for a regular use in your kitchen. However, if you are willing to put some effort into it, you could make a real homemade butter with your own hands.
To make a homemade butter you will need 1 gallon of really fresh cow milk (directly from the cow) and leave it in the fridge over night. This will separate cream from the milk.
If you can’t get cow fresh milk, you can still try making butter at home by using heavy or whipping cream you can get in the store. Just make sure is a full fat, otherwise it won’t work.
To see the whole process, watch the video on the next page.