/ck/ - Food & Cooking

Only the seam on the side of the can is welded. The top, and bottom are affixed with a double seam before pressure cooking. Cans used to be soldered shut on the side, often with lead, but once we noticed that this was making the boomers retarded we switched to welding, so most Gen X, Millenials, and Zoomers are safe from this avenue of lead exposure.