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In a bowl, combine all-purpose flour, cinnamon, cream of tartar, salt, cloves, ginger, and cardamom. Set aside.
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In a large bowl, cream together butter, granulated sugar, and brown sugar until thoroughly combined, about 1 minute. Add egg yolk, vanilla, and pumpkin puree and mix until smooth. Gently add flour mixture to the creamed butter, and mix on low speed until a cohesive dough is formed. Transfer the prepared cookie dough to a covered container and refrigerate for one hour.
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Preheat oven to 350°F and set aside two parchment lined baking sheets.
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Remove cookie dough from the refrigerator and shape it into 2-inch balls (about 1½-2 tablespoons worth of dough). Roll the balls around in the prepared chai spice mixture and place them 2-inches apart on prepared baking sheets.
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Bake until the cookies looks like its set, about 10 to 12 minutes. Remove from oven and cool completely on the baking sheets.