Peggy’s guest, Ella Pritsker, demonstrates easy and efficient methods of zipper installation. The Automatic Continuous Clothing Closure, commonly called the zipper, was first invented in 1917. Sewing ...

—Remove the air from the bag by gently pushing it out the top, then seal the bag. Check that it’s zipped up tight. —Place the bag with the ice cream mixture inside a second quart-size plastic zipper ...