INGREDIENTS
2/3 cup
brown sugar
2/3 cup
granulated sugar
1/2 cup
butter
1/2 cup
vegetable shortening
1/2 tsp
salt
2 tsp
vanilla extract
1 tsp
vinegar
1 tsp
baking soda
1 large
egg
2 cups
flour
2 cups
semisweet chocolate chips
1 serving
optional : sea salt