CAKE
Ingredients:

4 cups flour 
2 cups sugar 
2 teaspoons baking soda 
1½ teaspoons salt
½ cup cocoa 
2 teaspoons vanilla
1 cup oil 
2 cups cold water

Preparation:

Pre-heat oven to 325°F.
Mix ingredients except oil and water.
Gradually pour in the oil, followed by cold water.
Mix batter on a low mixer speed till smooth.
Pour batter in baking pan which has been greased with oil and floured.
Bake for 1 hour.

ICING (optional)
Ingredients:

350 grams icing sugar
75 grams cocoa
½ cup oil
¼ cup Rum (optional)

Preparation:

Mix all the ingredients to a smooth paste.
Cut cake horizontally and apply on bottom half.
Cover entire cake with the balance of the icing.