Home canning afterward. In Australia the most popular home canning system is Fowler's Vacola. This system uses glass jars, single use seals, metal lids, and a water bath canning sterilization process. During the canning process the lids are secured by metal tension clips which are removed once a vacuum seal has formed. Fowler's Vacola products are still produced and are available from some hardware stores. Used equipment is frequently sold on online auction sites and in opportunity shops. In Germany the most popular home canning system is Weck jar. This system uses glass jars (80ml-2.5l) and glass bottles (200ml-1l), reusable rubber seals,
David S. Mason David S. Mason David Stewart Mason (born November 23, 1947) is Professor Emeritus of Political Science at Butler University in Indianapolis. His most recent book, "The End of the American Century" (Rowman & Littlefield, 2008) explores the interrelated dimensions of America's domestic and international decline. That book has been translated and published in China, by the Shanghai Lexicographical Publishing House. Mason was born in Washington, D.C. in 1947; received his B.A. in Government from Cornell University in 1969; his M.A. in International Affairs from the Johns Hopkins School of Advanced International Studies in 1971; and his Ph.D. in Political Science