From the bloggers at Roadtreking
In a medium bowl place 1/2″ cubes of freshly torn white bread or roll. Pour buttermilk over the top of the bread evenly. Set bowl aside for 20 minutes while you combine the meats, parmesan and spices in another bowl or on a flexible plastic cutting board.
Make sure the buttermilk has saturated the bread cubes. The bread should be mushy and buttermilk mostly absorbed. Combine the meat and saturated bread to the meat mixture until just combined and the ingredients are mixed evenly.
For a list of ingredients and to read the entire article, click here.