Grelka Pure Naturellement! We are proud to offer you the healthiest, most tasty and natural meat. Grelka meat is premium quality from free-ranging Grelka cattle which have been fed exclusively on pasture.The Grelka farms are in the Katanga highlands where the grass is lush and green and the air is pure. Our cattle live in nature and graze only grass. That’s why their meat is so delicious and healthy.