Canning novelty. Early methods of manufacture employed poisonous lead solder for sealing the cans. Studies in the 1980s attributed the lead from the cans as a factor in the disastrous outcome of the 1845 Franklin expedition to chart and navigate the Northwest Passage. Later studies found this to be false. Increasing mechanization of the canning process, coupled with a huge increase in urban populations across Europe, resulted in a rising demand for canned food. A number of inventions and improvements followed, and by the 1860s smaller machine-made steel cans were possible, and the time to cook food in sealed cans had
Potted meat food product Potted meat food product A potted meat food product is a food preserved by canning and consisting of cooked meat product, seasoned, often puréed, minced, or ground, which is heat processed and sealed into cans. This is different from potted meat, an older noncommercial method of preserving meat. Various meats, such as beef, pork, chicken, turkey and organ meats are used. It is produced internationally as a source of affordable meat. Its long shelf life and cooked state make it suitable for emergency food supplies, and for military and camping uses, although the high content of fat, and/or preservatives may