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Preheat oven to 350.
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Mix flour, cream of tartar, baking soda, and salt together. Set aside.
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Cream sugar and shortening together in stand mixer. Blend well.
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Add the dry ingredients to the wet ingredients and mix well.
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Shape dough into 1 inch balls and roll in the cinnamon, sugar mixture, carefully rolling all side of the dough.
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Place the cookies 2 inches apart on parchment paper lined cookie sheet.
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Bake for 8-10 minutes. The cookies would have a few crackles on top when done.