Tender tuna & whitefish in rich sauce. For cats. Hartz Delectables Stew Tuna & Whitefish is a delicious combination of tender real tuna & real whitefish in a rich sauce for a lickable treat your cat will crave. Calorie Content: 350 kcal ME/kg (calculated. Calories per Pack: 14 kcal ME/40 g. Delectables Stew Lickable Treats are intended for intermittent and supplemental feeding only; this product may be fed daily along with a complete and balanced cat food diet. Hartz.com. Unicharm. Product of Thailand.