: This Wan-Eta Cocoa canning jar was manufactured in Boston, Massachusetts between 1930 and 1960. The quart-size jar has a number "8" printed on the bottom. During World War II, conserving garden produce for later consumption became a vital activity to support the war effort. Canning and drying food was essential to increasing the food supply on the home front, for troops abroad, and for hungry citizens of Allied nations. The canning process prevented fruits and vegetables from spoiling. By removing oxygen from jars holding produce, undesirable bacteria would not be able to grow. Good vacuums created in canning jars formed tight seals that keep liquid in and air out. View on Ohio Memory.
: Om3332_4692224_004 Subjects
: Daily Life; Agriculture; Canning and preserving; Glassware Places