In a bowl, add 4 yolks, ⅓ cup of sugar, and 1 tbsp of milk. Whisk well. (We are not going to use the egg whites here. But we will show you our favorite ways to use these leftover egg whites in the future. )
Heat up some water and bring it to simmer. Heat the yolk mixture over the hot water bath, until the temperature reaches over 160ºF. Keep whisking so that the bottom won’t burn.
Remove the yolks from the stove. Then use the mixer to whisk the egg until it becomes 3 times its original volume, and the color becomes pale.
Next, for the mascarpone cheese. In a bowl, add 2 cups of mascarpone cheese and ⅓ cup of heavy cream. Whisk well together, Until you can see this obvious trail when the beater passes by. (We added the cream here so it will be more liquidy to whip the cheese) Lastly, whisk 1 cup of heavy cream, till a very soft peak. (We don’t need a stiff peak here because we are going to mix this with the mascarpone and the yolk. So soft peak is enough and we won’t over-whip the cream at the end. )
Combine the yolk, mascarpone, and cream together, also add ⅓ cup of sugar, ½ tsp of vanilla paste or vanilla extract, and 1 tsp of alcohol* (see notes). Whisk everything well, and then we will get this thick cream.
Now we are going to prepare some liquid to soak the lady finger. In a bowl, add 1 tsp of matcha powder, and a very small amount of hot water. Whisk well until all of the powder dissolves. Then slowly add 1 cup of water and mix everything well. You can transfer it into a shallow dish and soak the lady finger into it.
Place the soaked lady finger at the bottom of the container. Add half of the mascarpone cream, spread it evenly. And lay another piece of lady finger, cover with more cream.You can use a metal spatula to make the surface flat, just wipe it clean after each time of use. Cover with a plastic film and leave it in the fridge for at least 3 hours. Before serving, sprinkle a thin layer of matcha powder on the top. Enjoy!(Try not to add too much matcha powder in this step, or it can become very bitter! A thin layer will be enough)