Nestle KitKat brand matcha 3.90 oz. (113g. )wafer bars are made by kneading crushed biscuits into Uji matcha-flavored dough. Uji a Kyoto prefecture is famous for producing the best matcha in Japan. They have created an authentic adult taste where you can enjoy the deep bitterness, aroma, and umami of authentic matcha. Allergens: Wheat, Milk, and Eggs.