Quick Cocoa Cake
["1 1/2 c. all-purpose flour", "1/2 tsp. salt", "1 tsp. baking soda", "3 Tbsp. Hershey's cocoa", "1 c. sugar", "1 tsp. vinegar", "1 tsp. vanilla", "1/4 c. plus 1 Tbsp. salad oil", "1 c. water"]
["Mix all dry ingredients by hand in a 9 x 9-inch baking pan (do not butter or grease pan).", "Mix in liquid ingredients until smooth.", "Bake 35 to 40 minutes at 350\u00b0 (325\u00b0 for glass pan)."]
["flour", "salt", "baking soda", "cocoa", "sugar", "vinegar", "vanilla", "salad oil", "water"]