2 1/4 cups all-purpose flour
1 teaspoon baking soda
1 teaspoon salt
1 cup (2 sticks) butter, softened
3/4 cup granulated sugar
3/4 cup packed brown sugar
2 large eggs
1 teaspoon vanilla extract
3 cups semi-sweet chocolate chips
2 cups flour
2 tablespoons sugar
1 1/4 teaspoon baking powder
1 large egg (or 1/4 cup pasteurized eggs)
1/4 cup seltzer water, plus more, if needed
Vegetable oil, for frying
Fleur de sel, for sprinkling