Add Lemon Rind and beat some more. Add powdered sugar to the beaten eggs and lemon Rind, and beat until light and fluffy and lemony colored. Gradually add the flour until you develope a good stiff dough. Place dough in bowl, cover, and sit in Refrigerator for at least one hour. Make sure dough is not sticky, if it is, add more flour and kneed as necessary.
Press designs into dough, then cut cookies and place on sheet.
Next morning bake at 350 Degrees for about 20 or 25 minutes, do NOT brown. Let cool, then place in airtight canister and store in cool place for two weeks.