I think he’s making a sausage. Specifically, he’s finished stuffing the casing, and is now tying and/or cutting the end with his teeth while pressing the sausage tight with his hands.

I’m pretty sure he’s not smoking. If you zoom in, it looks like his hands are holding something sausage-like, not cupping a bowl. I guess it’s possible he’s eating a sausage, but this seems more like the time of day when they’re working, not eating.

cc @PugJesus@piefed.social