Marble Cake/ Zebra cake

I love taking a beautiful freshly baked cake out of the oven. It's definitely going to be a pleasure cutting a slice of this cake with the beautiful chocolate and vanilla, zebra stripe effect.
This was surprisingly easy to make too, achieving spectacular effects.
I tried putting in toasted walnuts and although this tasted good, it messed up the stripe effect a little.
I also like this cake recipe since it's simple and I can use oil instead of butter.
Farida has explained the steps very clearly so I'm simply going to link to her recipe here