Turn the oven to 180 degrees. Put the sugar in a bowl and sift the flour, salt and baking soda together. Set aside.

Lightly beat the eggs. Set aside.

Place a medium saucepan on the stove and heat on medium. Mix the coke, margarine or butter and cocoa.

Add the oil and bring to boil. Add the marshmallows.

Stir until melted. Cool slightly. I filled a large bowl with water and held the saucepan there for a few minutes. Be careful not to burn your bowl!

Pour cocoa mixture over dry flour mixture. Blend in buttermilk and eggs.....

And vanilla. Do not use a mixer. Stir until mixed. Put into greased and floured baking pan of you choice. I used two nine inch pans. Bake for 23 minutes. Cake comes out very moist. Decorate as desired!