Evanger's Against the Grain Big Kahuna Can Cat Food consists of wild ocean-caught crab meat, tipalia and tuna fish that are hand packed and simmered in delicious gravy for a fresh and palatable cat dinner. The crab in the cat can food is high in protein and omega 3 fatty acids. It is low in mercury and contains no carbohydrates. One of the most healthiest meals for cats, Evanger's Big Kahuna cat food is rich in vitamins and minerals, including vitamin B-12 and mineral zinc and copper. The tilapia fish used in the can has a mild flavor and is full of benefits, including omega-3, omega-6, protein and heart-healthy fats. The unused portion of the cat food can be refrigerated for up to 36 hours.