Tyrolean grey cheese (Tiroler Graukäse) is a strongly flavoured, rennet-free cows-milk acid-curd cheese made in the Tyrolean Alp valleys, Austria.
It is extremely low in fat (around 0.5%) and it has a powerful penetrating smell.
[citation needed] The cheese produced in Austria is registered as protected designation of origin (PDO), Austria generally indicated in German as g.U.
[1] The registration of the PDO states that its production has been a significant element of Tyrolean peasant gastronomy for centuries.
Graukäse produced in Italy is protected by a prodotti agroalimentari tradizionali (PAT) designation.