Gran's ' Flop Proof' Chocolate Cake

My gran gave me this recipe for my first hen party. I don't know where she got it from, but it's a stunning cake. Hope you enjoy!

• Ready In: 45 mins
• Yields: 1 cake

Ingredients

• 250  ml sugar
• 250  ml self-raising flour
• 1  pinch salt
• 2  tablespoons  cocoa
• 1  teaspoon baking powder
• 3  egg whites
• 3  egg yolks
• 1  teaspoon vanilla essence
• 125  ml  oil
• 125  ml boiling water

• Icing

• 1  tablespoon  cocoa
• 250  ml icing sugar
• 150  ml milk

Directions

1. Line a 20 cm diameter cake tin with wax paper.
2. Heat oven to 180°C or 350°F while preparing mixture.
3. Sift together sugar, flour, salt, cocoa.
4. Stir to mix.
5. Add vanilla essence to egg yolks.
6. Stir together.
7. Add baking powder to egg whites.
8. Beat well to a froth.
9. Add boiling water to oil and stir vigorously into dry ingredients.
10. Add in egg yolk mixture and stir.
11. Fold in egg white mixture.
12. Bake at 180°C (350°F) for approximately 30 minutes.
13. For icing:
14. Once cake has cooled down, mix ingredients and ice cake.