Wikipedia Article About Appenzell on Wikipedia Appenzeller cheese is a hard cow's-milk cheese produced in the Appenzell region of northeast Switzerland. An herbal brine, sometimes incorporating wine or cider, is applied to the wheels of cheese while they cure, which flavours and preserves the cheese while promoting the formation of a rind. Appenzeller has a documented history of at least 700 years. Today, about 75 dairies produce it, each with a different recipe for their brine wash. Most of the recipes are trade secrets.