How to make it
In a small bowl whisk together flour, baking soda, and salt.
Preheat oven to 177°C. Line two baking sheets with parchment paper.
In the bowl of a stand mixer, beat butter on medium until creamy, for about 2 minutes. Add both granulated and brown sugars and continue to mix for 3 minutes.
Add egg, vanilla, and Lee Kum Kee Pure Sesame Oil, and mix until combined.
Add flour mixture on low speed until combined. Add in chopped chocolate and mix well to combine.
Portion dough into 70g balls. Place 4 cookies on a sheet pan. Freeze ten minutes. Remove from freezer and bake only one cookie sheet at a time for 11-14 minutes. The edges of the cookies should be set and brown and the middle of the cookies should be light golden in color.