Malzemeler/Ingredients:
300 g tereyagi/300g butter
150ml siyah bira/150 ml dark beer
250 g un/250g plain flour
Kabartma tozu/baking soda
100 g kakao/100g cocoa powder
375 g toz seker/375 g sugar
3 yumurta/3 large eggs
Vanilya/ vanilla extract
150ml sivi krema/150ml liquid cream

Ust krema icin/For the frosting:
200g bitter cikolata/200g dark chocolate
125g tereyagi oda sicakliginda/ 125g butter at room temperature
225g mascarpone cheese
225g elenmis pudra sekeri/225g icing sugar, sifted

Hazirlanisi/Preparation:

Firini 180 derecede isitin. 23 cm’lik yuvarlak kek kalibini yaglayin ve tabanini pisirme kagidi ile kaplayin. Tereyagini eritin. Icine kakaoyu ve birayi ekleyin, tel cirpici ile karistirin. 10 dakika sogumaya birakin. 

Genis bir kapta un, kabartma tozu ve sekeri karistirin. Ortasini acip, yumurta, krema, tereyagli karisim ve vanilyayi ekleyip yine cirpma teliyle tum malzemeleri iyice karistirin. Hazirladiginiz kek hamurunu kek kalibina dokun ve firinda yaklasik 1 saat pisirin. 

Cikolatali krema icin cikolatayi benmari usulu eritin. Tereyagi ve mascarpone peynirini mikserde cirpin. Erimis cikolatayi ilave edin, tekrar cirpin. Son olarak pudra sekerini de azar azar ekleyerek dusuk devirde tum malzemeleri karistirin. 

Kekiniz soguyunca kremayi kekin uzerine surun.

Preheat the oven to 180°C, grease a 23cm cake tin with a removable base and line with a disc of parchment paper. Melt the butter in a saucepan and then whisk in the cocoa powder and datk beer.  Remove from the heat and set aside.

In a large mixing bowl combine the flour, baking soda and sugar.  Make a well with the back of a spoon and pour in the melted butter mixture along with the eggs, sour cream and vanilla extract. Pour into the prepared cake tin and place in the oven for 1 hour or until a skewer inserted comes out completely clean. When the cake is baking, make the frosting.

To make the frosting, melt the chocolate in a bowl placed on top of a saucepan filled with a little water boiling over a low heat. Remove from the heat to cool for about 10 minutes. Place the butter and mascarpone cheese in a bowl and beat until fluffy and combined. Mix through the melted bitter chocolate and then gradually sift and beat in the icing sugar until you have a smooth, spreadable mixture. To assemble the cake, place it on a cake stand and spread with frosting