Canning is a preservation method that involves sealing food in airtight containers to prevent spoilage and extend shelf life. This technique dates back to the early 19th century and typically utilizes glass jars or cans to store fruits, vegetables, sauces, and even meats. The process involves heating the food to kill bacteria, yeasts, and molds, then sealing it to create a vacuum that inhibits further microbial growth. Canning not only preserves the food's nutritional value and flavor but also allows for year-round enjoyment of seasonal produce. It’s a practical and economical way to reduce waste and enjoy homemade foods, making it a popular choice among home cooks and food enthusiasts.