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Using the water bath technique for low-acid foods (foods with pH greater than 4.6). [15] Otherwise correct water bath or pressure canning but processing for too little time, the wrong pressure, or not considering variations in time/pressure due to altitude. Re-using one-use seals; Using cracked or chipped jars
Whether choosing to preserve food by canning, freezing or drying, remember there are guidelines to follow for the best results in safety and flavor. Canning, freezing or drying - know best ...
The only foods that may be safely canned in an ordinary boiling water bath are highly acidic ones with a pH below 4.6, such as fruits, pickled vegetables, or other foods to which acidic additives have been added. Although an ordinary boiling temperature does not kill botulism spores, the acidity is enough to stop them from growing. [12]
Potted meat is a form of traditional food preservation in which hot cooked meat is placed in a pot, tightly packed to exclude air, and then covered with hot fat. [ 1 ] [ 2 ] As the fat cools, it hardens and forms an airtight seal, preventing some spoilage by airborne bacteria . [ 3 ]
With the spread of appertisation, the 19th-century world entered the era of the "food industry", which developed new products such as canned salt meat (for example corned beef). The desire for safer food led to the creation of the US's Pure Food and Drug Act in 1906, followed by the national agencies for health security and the establishment of ...
Low-acid foods, such as vegetables and meats, require pressure canning. Food preserved by canning or bottling is at immediate risk of spoilage once the can or bottle has been opened. Lack of quality control in the canning process may allow ingress of water or micro-organisms.