Dark Chocolate Cake
["1 c. butter", "2 c. flour", "2 c. sugar", "1 c. cocoa", "1 tsp. salt (optional)", "2 eggs", "2 tsp. vanilla", "1 tsp. baking soda", "2 c. boiling water"]
["Melt butter.", "Mix together the flour, sugar, cocoa, salt (if desired) and melted butter.", "Add eggs and vanilla; mix well. Dissolve soda in boiling water and add to batter.", "It wil be very thin.", "Pour into greased 9 x 13-inch pan.", "Bake at 350\u00b0 for 30 minutes."]
["butter", "flour", "sugar", "cocoa", "salt", "eggs", "vanilla", "baking soda", "boiling water"]