1 1/2 cups all-purpose flour
1/2 teaspoon salt
1 cup white sugar
1/4 cup unsweetened cocoa powder
1 teaspoon baking soda
5 tablespoons vegetable oil
1 tablespoon white vinegar
1 teaspoon vanilla extract
1 cup cold water
1/2 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. Mix well with a fork, then stir in oil, vinegar and vanilla extract.
When dry ingredients are thoroughly moistened, pour in cold water and stir until batter is smooth. Stir in chocolate chips and pour batter into prepared pan.
Bake in preheated oven for 30 to 35 minutes, until a toothpick inserted in center comes out clean. Cool on a rack.