Marble cake

My marble cake, ive made this marble cake using melted chocolate, ive learnt that theres few ways to play with it, its fun..

• to add the melted chocolate to half of the cake mixture and to swirl them up
• add cocoa powder to half of the cake mixture, so you will have half cocoa cake mixture and the other half normal flavor, swirl them up
• or, what i did, i swirl around abit with some melted chocolate to the cake mixture, so i can really taste the rich chocolate. (usually i use at least 70% cocoa)