Anchor Hocking is a well established American glassware and bakeware manufacturer based in Columbus Ohio.  The factory has been making glassware for over 100 years and has forged innovative methods for producing high quality, great value products which have multiple uses around the home.  Bakeware, measuring jugs and mixing bowls are made with tempered glass, which is heated and cooled at steady rates to relieve the glass of any stress and to toughen the product so it is suitable for oven use.  Tempered glass is safer than other types toughened glass (such as borosilicate), if it is dropped, the material forms cubes rather than shards of glass.  It is also a more environmentally friendly form of manufacture over Borosilicate glass.