Add the hot water to a container with the sugar and dissolve the sugar. Using a brush, spread this syrup all over the surface of the cake.
Break the chocolate into pieces and add it together with the milk into a heat-resistant container. Microwave at 500w for 1.5 minutes.
Take the bowl out of the microwave and stir with a whisk.
Place the roll cake on top of a wire rack and place a plate underneath. Whilst the chocolate mixture is still hot, pour it over the cake and spread it quickly and evenly over the surface with a knife.
Once the cake is covered in chocolate, make some horizontal lines with the knife. Place in the refrigerator without wrapping.
Once the chocolate has hardened, sprinkle over a thin layer of cocoa powder.
Decorate the cake with whatever you like. In this picture I decorated the cake with chocolate truffles (recipe ID: 2044607).
You don't have to decorate the cake with cocoa powder, you can just decorate with the glacage.
＊You could also try decorating the cake with seasonal strawberries. To cut the cake cleanly, cut it with a warmed knife. (Recipe ID: 2427671)
I also recommend giving this glacage recipe a go - ID:722031.
If you cover the cake in the glacage the day before you serve it, it will allow more time for the flavours to blend, resulting in n even better tasting cake!
For step 1 it's fine to add liquor to the syrup as well. The roll cake that I'm using is from Monteur (13 x 7 cm).
Story Behind this Recipe
When I'm making a glacage cake as a gift I make it with cream, but when I'm just making for my family I use milk, as it's cheaper and you can shorten the preparation time. I bought a roll cake from the store since it was on special offer and this is what I decided to do with it. You can use this recipe as a chocolate sauce as well.
＊Don't leave the mixture in the microwave for too long, please keep an eye on it.＊I used a 48% cocoa chocolate bar that I bought from Lawson in this recipe, and quite a lot of it at that. ＊Please use a milk that contains a lot of fat. ＊Please use a knife or a small rubber spatula for step 4.