for cake - mix by hand

preheat oven to 350

sift sugar and flour together

combine butter, shortening, cocoa and cole

heat til butter is melted

pour over flour mixture

stir well

add buttermilk, soda, eggs, vanilla and marshmallows

mix well and spoon into well greased 13 x 9 x 2 " pan

marshmallows tend to clump. distribute through pan

bake at 350 for 45 minutes

spread with cola topping while still warm

for cola topping - about 5 minutes before cake is done, combine cola and cocoa and bring to a boil

stir in other ingredients

pour over hot cake while it's still in pan

topping will be very this , but will thicken as it cools

leave in pan til thoroughly cooled