Snickerdoodles
Soft, chewy cookies with a faint sourness under the cinnamon sugar. That tang is cream of tartar, and it is what separates a snickerdoodle from a sugar cookie rolled in cinnamon — leave it out and you have made something else.
At a glance
Ingredients and method are in the app
Kitchen Pantri holds the full ingredient list and step-by-step method for Snickerdoodles, checks it against what is already in your pantry, and adds anything missing to your shopping list. The app is free to use; you set up a Pantri account when you first open it.