Airtight food preservation.
Nicholas Appert discovered canning. Peter Duran was the one who invented the "tin can."
candy thermometer the answer above is incorect he invented canning ( by 10 year old colton tackett)
France
He was French
the engine
1795
Appert theorized that when food is heated in a container with no air in it, the food would keep.
Nicholas Appert
That if food is heated in a container with no air in it, the food will keep
Peter Durand was the first to use tin to preserve food. He improved on the technique originally founded by Nicholas Appert. Appert's original technique of food preservation involved glass jars. Durand altered Appert's technique by using thin sheets of tin-coated iron to hold food.
I have no idea.... It is still very cool.
nicholas appert a candy maker who became the father of canning his technique of preserving food is appertizing