Do you mean real cans or do you mean glass jars? I wouldn't touch canning. A touch dangerous at the temperatures you'd need I'd think.
To achieve temperatures above the boiling point requires the use of a pressure canner. Foods that must be pressure canned include most vegetables, meat, seafood, poultry, and dairy products. The only foods that may be safely canned in an ordinary boiling water bath are highly acidic ones with a pH below 4.6,[1] such as fruits, pickled vegetables, or other foods to which acidic additives have been added.