Preheat oven to 350 degrees F.

Cream together butter and sugar until creamy. Mix in 1 egg yolk at a time and vanilla and almond extracts. Add flour, baking soda, cream of tartar, and salt until dough is completely mixed.

Using a medium scoop (or heaping tablespoon), form dough balls and roll them in sugar crystals. Place cookie balls on cookie sheet lined with parchment paper 2 inches apart. Do not flatten dough!

Bake for 12 minutes until the surface of cookies has a cracked texture. The cookies should still look puffy and slightly undercooked. Remove from oven and allow cookies to remain on the cookie sheet for 5 minutes before transferring to a cooling rack. ENJOY!