Preheat your oven to 375°F. Line a baking sheet with parchment paper.
Weigh your wheat berries, then mill them on the finest setting. The flour weight will stay the same after milling.
Mix together all the dry ingredients: freshly milled flour, cream of tartar, cinnamon, baking soda, and salt, in a small/medium bowl.
Use a hand mixer with a large bowl, or a stand mixer, to cream together the softened butter and sugar until fluffy.
Add the eggs one at a time. Next, add the vanilla extract, mixing just until combined.
Add the dry ingredients to the batter. Scrape the sides and bottom down as needed.
Mix just until the dough comes together. Do not overmix the dough or the cookies can become dense.
In a small bowl, mix the cinnamon-sugar coating ingredients.
Scoop the dough into balls. I use a 1” cookie scoop; you could also do heaping tablespoonfuls. Roll each one in the cinnamon sugar.
Place on the prepared baking sheet. Leave a few inches between each cookie.
Bake for 8 minutes.