The Jarware Mason Jar Grease Keeper Lid helps preserve that flavourful bacon fat for future cooking. You can also use this to cool hot oils for future disposal, minimizing cooking grease in sink drains. There’s no fuss, no muss, just a great product. BPA free and made from recycled materials with silicone seals, this lid is top-rack dishwasher safe. With its cute, bright pink pig face, this jar is easy to find. It even shows up in the back of your fridge. This Grease Keeper Lid works on wide mouth jars. We recommend using a 16 ounce Ball, Kerr, Kilner or Anchor Hocking jar for the best results.