Cream butter and 1 c sugar in bowl until light and fluffy. Add lemon peel and salt. Beat in eggs one at a time. Sift together flour and baking powder in separate bowl. Fold into butter mixture to make dough. Heat enough oil for frying in deep frying pan to 360. Shape dough into small balls and drop about 8 at a time into hot oil. Fry 3 minutes. Turn with slotted spoon and let dough fry until golden brown, 2 to 3 more minutes. Lift out cookies with slotted spoon and drain on paper towels. Combine remaining quarter cup sugar and cinnamon, and while cookies are warm, sprinkle on the sugar and cinnamon. .