I love my Butter Keeper. Some people call it a "butter bell" or "butter bell crock" because of its bell shape.
Why do I love it?
Because it keeps my butter fresh and soft on the counter top for up to 30 days!
Don't you hate it when you try to spread cold butter on a piece of fresh bread....it tears and rips the bread apart!
I also love it because it costs under $10 and it is so easy to use...
Simply spread 1 stick (1/2 cup) of softened butter into the "bell."
Fill the other container with a couple of inches of fresh water. This is one of the keys to keeping your butter fresh. You must change the water every 2-3 days.
No biggie. This butter pretty much disappears after a week or so, which I then hand wash the butter bell and replace with a fresh stick of butter.
The water creates a seal, keeping outside air away from the butter, keeping it fresh.