No longer will you have to find some tupperware, plastic cling wrap, or heaven forbid, fold the butter packing over the open area. The butter saver cap is a small plastic cap that you put over your half used stick of butter that will help keep your butter fresh. The butter saver cap can also be used the measure out 1 tablespoon of butter. The butter saver cap is made of food safe silicone, is dishwasher safe, and measures 1.25 inches x 1.25 inches.