-Preheat the oven to 375 ºF
-Line your cookie sheets with parchment paper
-In a medium bowl stir together the flour, baking soda, salt, and cream of tartar. Put aside.
-In a mixer, beat sugar with butter until light and creamy - about a minute or two.
-Mix in the eggs and vanilla.
-Add in the flour mixture a bit at a time until combined.
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