Now I'm not sure of how to do this so bare with me. I saw this show on Anthony Bourdain show No Reseravtions / Praque. I was amased as I think that you will be at this guys talent of stuffing sausages. Then this guy uses a touchpick looking thing to tie or close up the ends. Now forward to the 7:00 mark and watch this then close your mouth with your finger like I did.
I hope that you were able to see it.