Never Fail Chocolate Cake
["1 egg", "1/2 tsp. salt", "1/2 c. boiling water", "1 1/2 c. flour", "1 c. sugar", "1/2 c. shortening", "1 tsp. soda", "1/2 c. cocoa", "1/2 c. sour milk"]
["Put ingredients in bowl in order given.", "Mix well.", "Bake in a 9 x 9-inch pan at 350\u00b0."]
["egg", "salt", "boiling water", "flour", "sugar", "shortening", "soda", "cocoa", "sour milk"]