Quick Answer
Glass jars are better than plastic for prepping foods due to their non-permeable nature and resistance to chemicals, which ensures the preservation of the stored food's nutritional value and prevents contamination.
Choosing Glass Jars for Food Storage
When selecting glass jars for food storage, look for jars made from borosilicate glass, such as Pyrex, as they are more durable and resistant to thermal shock. This type of glass can withstand extreme temperature changes without breaking or shattering. For example, if you need to store honey or jam in a cold storage room, a borosilicate glass jar will not crack from the sudden temperature drop.
Preventing Contamination with Glass Jars
Glass jars are airtight and non-permeable, making them ideal for storing dry goods and preventing the entry of contaminants such as dust, pests, or moisture. When storing grains or legumes in glass jars, make sure to leave a 1/4 inch headspace at the top to allow for expansion and prevent the buildup of pressure. This headspace also helps to prevent the growth of mold and bacteria.
Rotation and Shelf Life with Glass Jars
Glass jars can be easily labeled and dated, making it simple to rotate stock and maintain a first-in, first-out inventory system. Store the oldest jars at the front of the shelf or bin, and use the “first-expired, first-out” rule to ensure that the oldest items are consumed before they expire. For example, if you have a 5-gallon container of beans stored in glass jars, rotate the stock every 6-9 months to ensure that the oldest jars are consumed before they become rancid or develop off-flavors.
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