- 1 1/2 cups white sugar
- 1 cup butter, softened
- 6 egg yolks
- 1 teaspoon vanilla extract
- 1/2 teaspoon lemon extract
- 1/2 teaspoon orange extract
- 2 1/2 cups all-purpose flour
- 1 teaspoon baking soda
- 1 teaspoon cream of tartar
- Preheat oven to 350 degrees F (175 degrees C). Grease or line baking sheets with parchment paper.
- Beat sugar and butter together in a bowl with an electric mixer until light and fluffy. Beat egg yolks, vanilla extract, lemon extract, and orange extract together in another bowl. Add egg yolk mixture to butter mixture; beat well.
- Sift flour, baking soda, and cream of tartar together in a bowl. Stir flour mixture into butter mixture until dough is well-blended. Roll dough into walnut-size balls and place on prepared baking sheets. Press dough balls to slightly flatten.
- Bake in the preheated oven until golden around the edges and set, 8 to 10 minutes.