Preheat the oven to 350 degrees.
Beat sugar, eggs, and vegetable shortening in a mixer on high until light and fluffy.
Slowly add in the flour, salt, cream of tartar, cornstarch and baking soda continue beating on medium until mixed together.
Refrigerate the dough for at least 2 hours.
On a plate, mix sugar and cinnamon for rolling the dough in.
Using a cookie scooper, scoop the dough, roll it in your hands to make a perfect .
Roll the ball in the cinnamon and sugar mixture.
Place 9 cookies, spaced out on a lined cookie sheet.
Bake in a preheated 350-degree oven for 10 minutes.
Let the cookies cool on a cookie rack. Serve when they’re warm and chewy!