GANACHE ON CAKE RECIPES

Steps:

• Butter three 20cm round cake tins and line with non-stick baking paper. Heat the oven to 190C/170C fan/gas 5. Beat the butter and sugar together in a large bowl until light and smooth. Gradually beat in the eggs until combined, then mix in the vanilla. Fold in the flour and baking powder until everything is combined. Stir in the milk to loosen.
• Bake the sponges for 20 mins until golden and a skewer inserted into the centre comes out clean. Leave to cool in the tins for 10 mins, then transfer onto a wire rack to cool completely.
• Meanwhile, make the Swiss meringue buttercream. Put the egg whites and sugar into a heatproof bowl over a small pan of gently simmering water. Make sure the bowl doesn’t touch the water. Whisk for 3-4 mins until the sugar dissolves. Put into an electric mixer and whisk for 10 mins over a medium-high speed until you have a thick meringue.
• Gradually add the butter into the meringue mixture for 5 mins until incorporated and the buttercream is fluffy.
• Put one sponge onto a plate or cake stand, top it with a few tablespoons of the buttercream and spread into an even layer. Add the next sponge, and repeat. Top with the final sponge.
• Smooth a thin layer of the buttercream around the cake, so all the sides are coated – this is called a crumb coat. Chill in the fridge for 45 mins. Remove and smooth a thick layer of the remaining buttercream around the cake using a palette knife, reserving a little for decoration. Put back in the fridge for 45 mins-1 hr to set.
• Meanwhile, make the ganache. Put the dark chocolate in a bowl and heat the cream in a small pan until just steaming. Pour the cream over the chocolate and leave to melt for 5-10 mins. Stir to make a glossy ganache, then set aside to firm up a little – you want it to be pourable but not too runny. Spoon the ganache over the top edge of the cake, encouraging it to drizzle down the side with your spoon – start at the back of the cake to get the hang of it. Fill in the middle of the top of the cake with chocolate too. Leave to set for 10 mins.
• To decorate, put the leftover buttercream in a piping bag with a round nozzle and pipe little dots on top of the cake. Decorate as you like, remove any flowers before eating.

Steps:

• Heat the heavy cream in a 2-quart heavy-bottomed saucepan until bubbles begin to form around the edge of the pan. Make sure you chopped the chocolate as finely as possible to allow it to melt quickly and easily. Place the chopped chocolate in a medium-size mixing bowl. Make a ganache by pouring about half of the hot cream over the chocolate and letting it sit for 30 seconds to melt the chocolate. Then, slowly whisk until smooth and homogenous. Do not add all of the hot cream to the cold chocolate at once. The shock of the temperature extremes will cause the fat in the chocolate to separate. As the chocolate melts, you will see some elasticity if there is no fat separation. This means the chocolate still has an emulsion; the fat molecules are still holding together. If the ganache separates, it loses its elasticity, collapses, and becomes very liquid. I use a hand-held immersion blender to ensure a smooth ganache and to keep the emulsion of the chocolate. Add the remaining cream gradually and mix until all of the hot cream is incorporated and the ganache is smooth and homogenous.
• If the ganache separates, it is very easy to fix. Simply add a small amount of cold cream and whisk well. This will bring the ganache back together. The ganache should be thick, shiny, and smooth. Add the desired flavoring and mix until fully incorporated. Pour the ganache onto a plastic wrap-covered baking sheet and spread evenly with a rubber spatula. Cover the ganache with plastic wrap and allow it to cool for at least 4 hours at room temperature. I usually make the ganache at the end of the day and let it cool overnight. As it cools, it will thicken and set.
• When the ganache has cooled to the consistency of toothpaste, use an offset spatula to cover the cake layer with the ganache.