Marble Cake – Chocolate & Vanilla

1. Preheat the oven to 350 degrees Fahrenheit / 160 degrees Celsius  
2. Butter a cake tin- bundt / ring / loaf and put in fridge
3. Whisk flour,baking powder,soda and salt
4. Melt over hot water – 2 tbs spoon butter, cocoa and chocolate till smooth
5. Beat butter and sugar for 3-4 minutes till fluffy, with an electric beater
6. Beat in eggs one at a time,take care do not over beat , beat only till eggs are incorporated 
7. Add vanilla extract and stir gentle or beat once
8. On low beater speed or fold flour and hot milk alternatively starting and ending with flour (flour – milk – flour – milk – flour )
9. Take half the mixture and put it in the buttered baking pan
10. Fold chocolate to remaining mixture and pour over the white mixture in pan
11. With a knife gently swirl through pan twice not more 
12. Bake for 40 minutes till done ,test skewer is clean when inserted in the middle of cake

Variations :