Yep.

Once in a while I'll see something about the history of food preservation and it's always funny because the more optimistic folks will point to a particular date and inventor as the birth of pasteurized canning. And then a more curmudgeonly person will sometimes point out that the tin from those cans would leach in and turn the food black.

Not quite the victory people make it out to be. It was a bit later before they got the process to store food that people would eat.