INGREDIENTS
1
Egg, large
2
Egg yolks, large
60
bittersweet chocolate
1 1/2 cups
All-purpose flour
3/4 tsp
Baking soda
1 cup
Brown sugar, packed dark
1/4 cup
Granulated sugar
2 tsp
Vanilla extract
3/4 cup
Butter, unsalted
1¼ tsp. Diamond Crystal or ¾ tsp. Morton kosher salt