Heat oven to 375° F. In a medium bowl, whisk together the flour, baking soda, cream of tartar, and salt.
With an electric mixer, beat the butter, brown sugar, and 1 cup of the granulated sugar on medium-high speed until light and fluffy, 2 to 3 minutes. Beat in the eggs and vanilla. Reduce speed to low and gradually add the flour mixture, mixing just until incorporated.
In a shallow bowl, combine the cinnamon and the remaining ¼ cup of granulated sugar. Form the dough into balls (each equal to 1 level tablespoon). Roll the balls in the cinnamon sugar mixture and place on parchment-lined baking sheets, spacing them 2 inches apart.
Bake until the edges are golden, 12 to 14 minutes. Cool slightly on the baking sheets, then transfer to wire racks to cool completely.
Total time includes cooling time
I think I have bit of different cup than US .. Anybody point me please in grams? Just about these ingredients.. Sugar, Flour and Butter?
I have found google but simply I could not rely on.