Mason Jar?
Aug. 17th, 2014 07:34 amInitially, the jars were handblown and infused with substances like iron oxide and cobalt, producing shades of amber and a hue that Mr. Leybourne calls “Vicks VapoRub blue.” (These jars now fetch up to $30,000 apiece on the collectors’ market.) But, eventually, manufacturers dispensed with the colors in favor of a clear view of the food inside. Moar