Ingredients
Method
For the cake:
- Preheat the oven to 375ºF (180ºC). Grease two round cake pans of about 9 inches (23 cm) diameter.
- In a medium sized bowl, sift the flour along with the corn starch, salt, baking powder and baking soda.
- In a big bowl, using an electric mixer, cream together the butter and sugar for 3 minutes until the mixture becomes fluffy and lightens in color.
- Add the oil and butter and mix until fully integrated. Mix in the eggs and egg yolks one by one, beating after each addition.
- Add in the flour mixture in three separate additions alternating with the buttermilk, beating after each addition. Mix well until smooth.
- Pour the mixture in the two cake pans and bake for about 20 minutes aprox until a wooden stick comes out clean when inserted.
- Once ready, let the cakes rest for about 10 minutes. Turn them out and place them on a cooling rack to completely cool down.
For the frosting:
- Cut the chocolate un small pieces and place them in a heat resistant bowl. In a small pot to medium heat or in the microwave, heat the whipping cream to bring it to a boil.
- Once boiling, pour it over the chocolate pieces, let it sit for 3 minutes and then mix until fully integrated to form a ganache.
- In a big bowl, using an electric mixer, cream together the butter and confectioners sugar, salt and vanilla extract for 3 minutes until you get a lighter in color and fluffy mixture.
- Add in the cocoa powder (sifted) and continue to beat for 2 more minutes until you get a smooth mixture.
- Once cool, add the ganache and beat for 2 more minutes until the mixture is soft and creamy. Refrigerate the frosting for 15 minutes.
To assemble:
- Place one of the cakes on a big plate or cake stand (which is where the cake will be presented). With a spoon spread a third of the frosting over the cake´s top.
- Place the other cake on top and then slowly spread the rest of the frosting all over the cake. Spread the frosting on the sides of the cake with a spoon, making circles to form "waves" and decorate.
- Refrigerate the cake for 30 minutes before cutting.
