Switzerland cheese selection. Traditions. 8 aged months minimum. Exclusively selected Le Gruyere AOP cheese. Selected exclusively from five premier Le Gruyere AOP creameries in Switzerland. Le Gruyere AOP cheese. Aged over 240 days. This handcrafted cheese is made with milk from exclusively selected creameries and using the same 900 year old traditions in Switzerland to ensure the highest quality Gruyere.