Boil potatoes well, mash them with the butter and a little salt to a smooth paste (is thick and homogeneous). Spread mashed potatoes in a suitable bowl and shape the face of our Santa Claus. His hat do using ketchup or chutney (whatever you like more). Then smeared with cream beard and top Smash feta cheese. Put olives for eyes, pieces of lukanka, tomato, roasted pepper, to your taste shape nose and mouth.