Grass Fed Bison is sourced from Bison raised on U.S. pastures. These Bison are 100% Grass-Fed, a.k.a., Grass-Fed and Grass-Finished. Over 95% of all Bison raised in the USA is Grain-Finished, so we think of this as a very special Bison Tallow indeed. When used for cooking, Grass-Fed Bison Tallow has a very pleasant flavor and is a great addition for those following Whole30, Keto, Paleo, low-carb, or other elimination-style diets.