You can bake this in a 9*3 pan or use two 9"pans then layer your cakes with frosting or ganache.You can even make cupcakes out of this,it would yield about 24 small cupcakes.

You can make buttermilk at home.Take 1cup room temperature milk and add 1tsp of vinegar or lemon juice.Let this stand for 5-10mnt and then use accordingly

Preheat oven to 180°C.Grease and put some parchment in yours pans.Then grease the parchments as well and dust with a bit of flour

Sift together flour,salt and baking powder.Add cocoa and drinking chocolate into flour set aside.

Cream butter and sugar until light and fluffy. Scrape sides of bowl every few minutes using the whisk attachment or a rubber spatula.This is crucial, otherwise you're going to be left with chunks of butter in your finished batter.So make sure your cream is well and don't rush.

Add eggs one at a time.Making sure each egg is perfectly incorporated b4 you add another. If you skip too quickly past this stage you will have a cake that smells of eggs because the bit of eggs that aren't fully beaten in will bake separately in the cake and it will be so how scrambled eggs cooking in your cake.Remember to scrape down the side of the bowl later add vanilla.

Add flour and buttermilk in three alternative pours,starting and ending with flour.Mix on slow speed and scrape the bowl during the process. I know it's a pain in the butt.lt's worth it.At this stage do not over mix,just combine until the batter is incorporated. Over mixing can ruin your cake

Once everything is well incorporated, use a plastic spatula to fold the batter a few more times to make perfectly sure you've got everything will mixed

Add the batter to the cake pan. Baje in preheated oven for 25to40 minutes. Check for dononess by pressing gently on the cake. You can use a toothpick to check out. Don't over bake the cake! :)

Let the cake cool in the pan for a few minutes then turn it out onto a cake board

Now you can frost it,slice and layer it.Gananache it with sweet, biscuit,wapper stick or with chocolate...... Anything you want!