Scale ingredients accurately. have all ingredients at room temperature.
Partway through mixing, stop the machine and scrape down the bowl to ensure even mixing.
For light cookies, cream until the mix is light and fluffy, in order to incorporate more air for leavening. for denser cookies, blend to a smooth paste, but do not cream until light.
Sift in the flour and leavening. mix until just combined. do not overmix, or gluten will develop.