Who developed the first canning method in 1809?

The first canning method was developed by the French chef and confectioner Nicolas Appert in 1809.12

In response to a French government initiative to find a way to preserve food for military use, Appert spent 14 years experimenting with heat preservation. His method involved placing food in glass containers, sealing them with cork and wax, and heating them in boiling water for specific durations. This process effectively killed microorganisms and prevented spoilage, a mechanism that was later explained by Louis Pasteur 50 years later.123

While Appert is credited with inventing the process, it was Peter Durand who received a British patent in 1810 for the use of tin-coated iron cans, which eventually replaced the glass bottles used in Appert's original technique.23