My restaurant just got in a bag of these guys, and they're pretty intimidating. I think we might soak them in milk to draw some of the blood out, and then treat them like sweetbreads. We have never cooked them before, so the sweetbread approach (soak, boil, clean, slice, and pan fry) is something we hope will work. They have been in our freezer for a while, but I will update once we cook them. We also just got in some sort of penis, I think a bison, it is called a pizzar (something like that). So if anybody has any suggestions for cooking these please let me know.