Mystery Cake
["3 c. flour", "2 tsp. soda", "2 c. sugar", "2/3 c. cocoa", "1 tsp. salt", "2 tsp. vinegar", "2 tsp. vanilla", "1 c. oil", "2 c. cold water"]
["Sift the first 5 ingredients together in a large bowl.", "Make 3 holes in this dry mixture.", "In one add vinegar, in another add vanilla and the last add oil.", "Over all pour cold water and beat well.", "Bake in 2 (8 or 9-inch) cake pans at 350\u00b0 for 35 to 40 minutes."]
["flour", "soda", "sugar", "cocoa", "salt", "vinegar", "vanilla", "oil", "cold water"]