peculiarb This isn’t necessarily for bologna but it can be used and just change the seasoning.
Meat Block : 18 lb pork butts
Additive: 7 lb frozen french fries or hash browns
Ice/Water: 12 oz
Seasoning: Seasoning of your choice
Process: Grind all meat through 3/16th plate, then grind half of what you just ground through a 1/16 plate. Add seasoning, water and mix for 3 minutes. Grind Potatoes through 3/16 plate once then mix in the potatoes and mix for a few more minutes.
Casings: Stuff into 30-32mm Hog Casings.