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How Does Smoking Preserve Food?

Smoking, as a mode of food preservation, is probably as old as cooking with fire. Heat and smoke infuse a delicate flavor into fish, ham, poultry and meat and can prevent the growth of microbes. While smoking done right is a very effective form of food preservation, care must be taken to avoid contamination and food-borne illness.

How Does Smoking Preserve Food?
How Does Smoking Preserve Food?

Types of Smoking

Smoking can either be done hot — in a kiln or smokehouse for a short period — or cold — over low heat for up to 24 hours. Hot smoking preserves foods in three ways: Heat kills microbes; chemicals found in the smoke — including formaldehyde and alcohols — act as preservatives; and the food dries out so there is less moist area for bacteria to grow. Cold smoked foods are typically preserved in some other way — fermenting, salting or curing — before the smoking process begins. Even with additional preservation steps, cold smoked foods should be cooked to an internal temperature of 160 degrees Fahrenheit before consumption.

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