Pre-heat the oven to 400℉. Line 2 baking sheets with parchment paper and set aside.
In a medium sized bowl combine the shortening, sugar, and eggs and mix thoroughly.
In a separate bowl, combine the flour, cream of tartar, baking soda, and the salt. Mix well then add to the shortening mixture.
Mix until combined scraping down the bowl as needed.
Shape the dough into 1 inch balls.
Roll the 1 inch dough balls into the cinnamon sugar mixture until fully coated, then place them onto the baking sheet.
Bake for approximately 7 minutes or until the cookies are puffed and the tops appear cooked.
Remove to a cooling rack, the cookies will deflate a bit once cooled.