• Combine flour, salt, sugar, and cocoa.
• Bring water, salad oil, and butter to a boil; combine with dry ingredients.
• Beat until creamy.
• Add buttermilk, baking soda, and eggs.
• Bake cake for 10 minutes at 400º or until the center springs back when touched.
• Be careful not to overbake the cake.
• Remove from oven to cooling rack.
• Frost cake while VERY HOT!

Frosting:

• continued Boil butter, cocoa, and buttermilk.
• Add marshmallows; stir until melted.
• Add powdered sugar.
• Frosting will be thinner than normal frosting.