The Art of Preserving All Kinds of Animal and Vegetable Substances for Several Years, 2nd ed. A work published by the order of the French minister of the interior, on the report of the Board of arts and manufactures

"The Art of Preserving All Kinds of Animal and Vegetable Substances for Several Years" by Nicolas Appert is a guide explaining how to keep food fresh for years. It teaches ways to preserve both meat and plant-based foods using special tools and steps. The book starts by talking about why keeping food fresh is important and looking at old ways like drying or pickling food, explaining that while these are traditional methods, they have shortcomings. Appert then introduces his new method where food is cooked in sealed bottles using a water bath. He stresses how important it is to be clean, pick the right materials, and pay attention to detail when cooking. The knowledge in the book can help families and businesses, changing how food is stored and made available.