For the cake

Preheat oven 350

Sift sugar, baking soda and flour in a large mixing bowl and set aside

Put the stick of butter and oil in a 9*13 dish.  Place the dish in oven to melt

In a small bowl wisk cocoa and water together

Once the butter has melted add cocoa and water mixture

Return dish to oven and bring to a boil in the oven and cook for 1 minute

Pour liquid mixture over the dry ingredients and mix with a spoon (don't use a mixer)

Add buttermilk, eggs, vanilla and mix with a spoon

Pour back into 9*13 pan and bake for 45-50 minutes

For the icing

5 minutes before cake is done, melt butter in a medium pan over low heat

Add canned milk

Mix cocoa in 1/3 cup water 

Add cocoa mixture and vanilla to pan

Bring to a boil and cook for 1 minutes

Remove from heat 

Sift powdered sugar into cocoa mixture and stir until smooth

Pour over cake while hot