NutriSource Choice Whitefish Grillin’ Grillers are made with high-quality protein. Wholesome ingredients that dogs love in a treat make these totally satisfying! Ingredients Whitefish, sorghum, barley, peas, pea protein, vegetable glycerin, brewers rice, pork liver, phosphoric acid, natural smoke flavor, potassium sorbate (a preservative), citric acid ( a preservative, tocopherols (a preservative).