Slice lean meat into thin strips
Dry the meat completely until brittle
Grind or pound the dried meat into a fine powder
Render beef fat or tallow until fully melted and clear
Strain the melted fat to remove solids
Mix the meat powder with melted fat
Add dried berries if desired
Stir until the mixture is thick and evenly combined
Pack the mixture tightly into molds, jars, or balls
Let it cool and harden completely
Store in a cool, dry place