In a medium bowl, sift flour, salt, and baking soda. Set aside.
Using a stand mixer or hand-held mixer, cream butter and sugar until fluffy. About 2 minutes.
Add in vanilla and egg until combined.
Slowly add in flour mixture. Do not over mix.
Fold in chocolate using a spatula.
Cover and chill in fridge for 30 minutes. This will allow dough to rest.
Preheat oven to 325 degrees.
Line cookies sheets with parchment paper. Set aside.
Using a small cookie scope or spoon. Form 1 inch to 2 inch balls of the dough. Line them on sheets. Allow 2 inches in between cookies.
Bake for 10 minutes or until bottom of the cookie is golden brown.
(Optional) Sprinkle sea salt flakes after baking.
Allow to cool on racks. Enjoy with a nice glass of milk!