Appert’s preserving jar
Wide-necked glass bottles in which food was preserved by boiling – the first canned food.
Appert won a prize from the French state in 1810 for a method of preserving food for the army. His book became the basis of the canning industry. Examples are in the Musée des Arts et Métiers.
Materials: Glass, cork, wax, wire
Manufacture: Food was put in the glass, corked, sealed with wax and boiled in a water bath.
The wide neck that allowed whole vegetables to be put in.
The cork tied down with wire against the pressure.