1 1/2 cups all-purpose flour1/2 teaspoon salt1 cup white sugar1/4 cup unsweetened cocoa powder1 teaspoon baking soda5 tablespoons vegetable oil1 tablespoon white vinegar1 teaspoon vanilla extract1 cup cold water1/2 cup semi-sweet chocolate chips Preheat oven to 350 degrees. Grease an 8-by-8-inch baking pan. In a large bowl, combine flour, salt, sugar, cocoa powder and baking soda.