Epigen canned diets (formerly Au Jus) are premium 95+% meat pet foods designed to mimic the archetypal, natural eating patterns of our carnivorous companion animals (dogs, cats and ferrets). One of the few natural canned pet diets on the market that is truly genetically ...Epigen canned diets (formerly Au Jus) are premium 95+% meat pet foods designed to mimic the archetypal, natural eating patterns of our carnivorous companion animals (dogs, cats and ferrets). One of the few natural canned pet diets on the market that is truly genetically appropriate, and devoid of all the modern conventional pet food filler ingredients and additives, including starch ingredients! The Wysong Epigen Canned Diets are Starch Free, and contain no starches, grains, fillers, or artificial preservatives - no artificial anything! Use Epigen Canned Diets as a supplement to Wysong dry diets, and rotate with fresh foods and Wysong True Non-Thermal raw foods.