Cheese (not melted) to grate

Boil potatoes, add grated cheese, egg, flour, salt. Mash and mix.

Mashed potatoes cool, wet hands in cold water. To take in hand a lump of mashed potatoes (about a tablespoon) in the middle to put a slice of processed cheese, to close up around him a lump of mashed potatoes and roll a ball.

Finished the ball to put in a well pre-heated vegetable oil. You can use a deep fryer, but in the absence thereof is quite suitable saucepan, cauldron, saucepan or a deep frying pan. When the ball visibly browned (3-5 minutes), then he's ready to get one. Do not pre-cook the balls. They molded quickly, ready to just throw in the butter, and get in a differentiated way :)