These popular food preservation techniques can kill you

Ever since humans have been eating food, they have sought ways to extend the shelf life of food.

Over 12,000 years ago, people in the Middle East preserved their food by drying it under the hot sun. About 7,000 years later, the Babylonians pickled dates in wine and vinegar. Then in 1810 Nicolas Appert came along and developed corked glass containers, sealing he used wax and boiling water to preserve fruit, soups, vegetables and dairy products.

Maine settlers and gardeners continue these food preservation traditions, often exploiting methods used centuries ago. Even though modern science has come up with a process that experts say is far more reliable and safe.

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