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Salting: This ancient method involves coating food with salt, which draws out moisture and inhibits the growth of spoilage-causing bacteria.
Drying: Foods such as vegetables, cassava, fish, and meat can be preserved by drying them in sunlight, which reduces their moisture content.
Smoking: By exposing food to smoke from burning wood, moisture is removed while also imparting flavor, making this method suitable for meats and fish.
Refrigeration and Freezing: Keeping food at low temperatures in refrigerators or freezers extends freshness for items like fruits, vegetables, meat, and dairy products.