In a saucepan mix the milk, sugar and coconut. When boiling add the butter, boil over low heat, stirring continuously. Halvata is ready once it is separated from the wall - after about 30 minutes. Add the walnuts, leaving little for sprinkling. Flavored with spices. Spread over hot buttered paper. Sprinkle with remaining walnuts. When cool cut into pieces of desired shape. Serve with lemon sorbet.