Finely chop greens and combine well with small pieces of mutton fat. Add salt, crushed red pepper, and cook in oil. Make stiff dough out of flour, salt, egg, and water, let stand for 30-40 minutes. Roll out dough like for chuchvara recipe above. Place a touch of filling in the center, fold dough corner to corner, pinch edges comletely enclosing greens. Boil in salted water.