3 cups plain flour
2 cups Chelsea White Sugar
1/2 cup cocoa powder
2 tsp baking powder
2 tsp baking soda
1/2 tsp salt (optional)
2 cups cold water
2/3 cup cooking oil
2 eggs
2 tsp Vanilla essence
2 Tbsp white vinegar

Chocolate Icing
1 tbsp butter
1 Tbsp cocoa
2 Tbsp boiling water
Chelsea Icing Sugar 

Sift all the dry ingredients together in a large bowl. Add all liquids together add to the mixture and mix together until smooth. Grease a tin and pour mixture in bake at 180°C for approx 1 3/4 hour.
Test with a knife to ensure cooked through.

Icing
Mix together all ingredients, beating until smooth, adding enough sifted Chelsea Icing Sugar until it forms peak.  Ice cake.