The Kilner butter churner offers the easy way to make homemade butter. Simply place whipping cream into the butter churner, turn the handle, and in as little as ten minutes you can enjoy fresh and delicious tasting butter. Includes recipes. The original Kilner Jar, invented by John Kilner and Co. in England is as much loved and successful now as it was over 180 years ago. Our diverse product range provides simple solutions for preserving, food preparation, storage and eating on-the-go using high quality materials all authenticated with the iconic Kilner brand logo.