Kasteel Rouge Belgian Cherry Fruit Beer 330ml Bottles - 8.0% ABV (12 Pack) Kasteel Red is a gastronomic Belgian fruit beer with a unique dark red colour. It is created by mixing Kasteel Donker, which has been aged for at least 6 months in Belgium, with sour cherries. Enjoy this outstanding real ale as an aperitif, to complement a dessert, or as a tasty beverage on its own.