Thick and Chewy Chocolate Chip Cookies

Ingredients

• 2 1/8 cups unsifted all-purpose flour
• 1/2 tsp. salt
• 1/2 tsp. baking soda
• 12 T. unsalted butter, melted and cooled until warm
• 1 cup brown sugar
• 1/2 cup granulated sugar
• 1 large egg plus 1 yolk
• 2 tsp. vanilla extract (pure, real!)
• 1-2 cups semi-or bittersweet chocolate chips/chunks