10tablespoonsunsalted butter, at room temperature (140 grams)
1 ¼cupgranulated sugar(250 grams)
1teaspoonvanilla extract
Zest of 1 lemon
½teaspoonsalt
6large egg yolks
3cupsall-purpose flour(360 grams)
Instructions
Preheat oven to 350°F and line a sheet pan with parchment paper.
In the bowl of an electric mixer, beat together the butter and sugar on medium-high speed until light and creamy, about 3 minutes. Add the vanilla, lemon zest, and salt and beat for a minute to combine. Add the egg yolks one at a time, mixing after each. Add the flour 1 cup at a time, mixing until just combined after each addition.
Take a walnut sized piece of dough and roll into a ball, then use your hands or a flat surface to roll the dough into a rope about 5 inches long and ½ inch thick. Shape the dough into an "S" and place on the parchment lined sheet pan.
Bake for 12-15 minutes or until they just start to turn golden. Cool on a wire rack.