Preheat oven to 400° F. Line baking sheet with parchment paper or Silpat mat.
Make topping by mixing sugar and cinnamon together, and set aside.
In a separate bowl, sift together flour, cream of tartar, and baking soda, and set aside.
In a standing mixer, cream together butter (or lard) and sugar until light and fluffy
Beat in eggs, one at a time, until well-mixed.
Add flour mixture to butter mxture, mixing thoroughly
Roll dough into balls, using about 2 teaspoons of dough for each ball.
Roll balls in topping mixture and place on prepared baking sheet.
Bake for 8-10 mins. or until just lightly browned (but still soft).
Allow cookies to cool on baking sheet for 1-2 mins. then transfer to baking rack until completely cooled.
Store in airtight container for up to 1 week at room temperature.