have about 1 kg. Round steak in a semi-frozen state, then slice in 1 cm. Strips across grain. Marinate meat in covered container for 4 hrs ( or over night ) in fridge. Remove meat from marinade . spread strips on racks placed on cookie sheets. Bake at 100 degrees C. ( 200 degrees F. ) for 6 to 7 hrs turn off heat and let sit in oven over night.