"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Pyrex was developed by Corning Glass Works in the early 1900s and began as clear glassware. The company ...

You may have heard that uppercase PYREX and lowercase pyrex labels on cookware indicate what materials the items are made of.

For kitchen enthusiasts who love a little nostalgic kitsch, hunting down vintage Pyrex dishes at at garage sales, flea markets, estate sales, thrift shops, antique shops, and on Facebook Marketplace ...