Cut beef liver with a serrated knife into 2-inch pieces.
Place liver pieces into the buttermilk, and soak for 1 hour.
After 1 hour, remove liver pieces from the buttermilk and roll in flour.
Dip dusted liver back into the buttermilk and then roll in flour again.
Place liver pieces on a baking sheet or a baking sheet lined with a cooling rack.
Place enough tallow in a heavy bottom pot, so that when the tallow melts, it measures at least 1 inch from the bottom.
Melt tallow to 350°F.
Place four pieces of liver in the heated fat and fry until golden brown, approximately 3-4 minutes.
Remove fried livers from pot and place to drain on a paper towel or cooling rack placed over a baking sheet. Sprinkle fried livers with salt.
Repeat the process until all livers pieces have been fried.
Serve immediately with your favorite condiment, like Fermented Ketchup.