Chocolate Mud Cake

I have made mud cakes before and it used to turned out dry. Now I will take the cake out of the oven when the skewer comes out moist but not wet. An also Lindt chocolate makes a difference. It taste much better. This cake can also be covered with marzipan and fondant. It is very rich, I like it just as it is or serve with some cream.

1 cup (250 mls) water
250 grams butter
250 grams dark chocolate
150 grams self raising flour
150 grams plain flour
60 grams cocoa powder
1/2 teaspoon bicarbonate soda
450 grams caster sugar
4 eggs
2 tablespoon vegetable oil (I used olive oil)
125 mls buttermilk

1. Preheat oven to 160C.
2. Put butter, chocolate and water into pan. Stir over low heat until smooth. Remove from heat. Cool.
3. Sift flours, cocoa and bicarbonate soda into a large bowl. Stir in sugar and make a well in the centre.
4. Add combined eggs, oil and buttermilk and using a metal spoon slowly stir to start incorporating to dry ingredients. Gradually stir in the melted chocolate mixture.
5. Pour into greased line tin.
6. Bake for 1 3/4 hours. Test centre with a skewer. It is ready when moist but not wet.