1. (It's not necessary to preheat the oven yet because the dough will be spending time chilling in the refrigerator. When you do preheat, set the oven to 350℉) – Set the vegan butter out to soften if not already soft. You do NOT want it melted or warm- only softened and still cool.
2. Juice and zest the lemon. You might be able to get it all in one big juicy lemon, but plan on using two just in case. Set the zest aside separately.
4. Measure out the flour by "lightening" or sifting. See the blog post for photos. Add the measured flour along with the baking soda, cream of tartar, and salt to a medium-sized mixing bowl and mix together.