Originally Posted by Andy M.
I found a significant difference in the texture/consistency of the extruded pattys as compared to the 'big blob'. The extruded pattys are denser and take much longer to cook than hand formed burgers. The meat seems to be compressed as part of the extrusion process. I didn't care for that difference.
This is the same reason I would be reluctant to roll the hamburger out flat with a rolling pin. It would be compressed, and have a denser texture. I would think it would get over mixed after a few times too.