A bacon press is a tool used to cook bacon. It is a flat, heavy weight that is placed on top of the bacon while it cooks, which helps to evenly cook the bacon and prevent it from curling up.  Bacon presses can be made from different materials, such as cast iron, aluminum, or Stainless steel. Some bacon presses even have a handle on them to be easily removed from the pan. Bacon presses are not absolutely necessary for cooking bacon, but many people find that they help to produce better results.  When bacon is cooked without a press, it can often curl up and become uneven. This can make it harder to cook the bacon evenly and cause it to shrink. A bacon press helps to prevent this from happening. Another benefit of using a bacon press is that it can help extract some of the fat from the bacon as it cooks. This can be helpful if you are trying to reduce the amount of fat in your diet.  By pressing down on the bacon, you can help to release some of the fat into the pan, which can then be drained off. This can also help to make the bacon less greasy. If you are looking for a bacon press, many different styles and materials are available. You should be able to locate that suits your needs and preferences.