In a small cooking pot, add sugar (15g) and 1 tsp water and bring it to a boil. Once it starts to be lightly brown, then add the nuts and stir for a few seconds. Transfer over the baking sheet and let it cool. Set aside.
2. In an another small cooking pot add heavy cream (50ml) and heat until almost boiled. Remove from the heat and add white chocolate (40g), mix gently until the chocolate blocks are melted completely. Transfer into a heat-safe bowl and let it cool to room temperature then chill in the fridge.
3. Once the chocolate mix is cold : in a medium bowl, add mascarpone, sugar and the chocolate mixture from #2. Mix well. Add matcha sifting with a sieve. Mix well. Add the nuts from #1 and mix.
4. Prepare the silicone mould (here I used a 4cm diameter * 15-hole mould). Place the matcha cream in each hole. Flatten the surface, using a spoon. Place in the freezer until it is frozen. I usually make this one day before I want to make mochi.
5.Mochi time! Once the cream is frozen, start preparing the mochi mixture : In a microwave safe glass bowl, combine flour and sugar. Stir to combine. Add the water and mix with an egg beater until smooth. Cover the bowl lightly with cling wrap.
6. Microwave the mixture for 1 minute. Then stir the dough with a spatula. Put it back in the microwave again for another minute and stir lightly. Put it back in the microwave for another 30 seconds (not 1 min) and stir. And once more microwave for 30 seconds and stir. The mixture should be now very thick and translucent.
7. Transfer the mochi dough on your working surface floured with katakuriko/potato starch. As it is very hot you should use a spatula or a dough cuter. Cut the mochi into 15 equal pieces. Don't forget to coat your hand with katakuriko/potato starch.
8. With your hands, take one of these pieces and flatten it into a thick disc. Then put a frozen cream ball from the freezer in the middle of the mochi disc. Pull out the cream balls one at a time from the freezer as they will melt quickly. Pull the edges of the dough disc together to cover the cream ball. Press together the edges to seal well. Smoothen the mochi by rolling it on the dusted board.
1. In a bowl whisk together eggs, sugar and salt using a hand mixer.
2. In a small cup, dissolve matcha powder (1/2 tbsp) in hot water (1 1/2 tbsp). Set aside. In a heat safe bowl, add the milk and microwave for 1 min at 600W. Add the dissolved matcha into the milk. Mix well.
3. Slowly pour the milk into the egg mixture from #1 gradually and mix well.
4. Add the sifted flour and mix well until the batter is integrated.
5. Strain the crepe mixture twice through a fine sieve. Add the melted butter to the mixture and mix well. Cover with plastic wrap and let it sit at room temperature for about 30min to 1h.
Cooking the crepes :
6. Heat a 16~17cm non-stick pan on medium heat (a different size of pan will yield different number of crepes and need different amount of batter per crepe). Once the pan is hot, reduce the heat to low, brush with oil and remove the excess with a paper towel (a thin application, only the first time is fine).
7. Pour 2~3 tbsp of batter into the heated pan and swirl the pan to coat evenly.
8. Once the batter is dry and the edges start to brown, flip the crepe with your hand. Let it cook on the other side for a few seconds. Then transfer to a plate to cool down.
Repeat until all of the batter has been used.
9. Once cooled completely, use a 15cm round plate or cake bottom as a guide and cut off crepe in excess.
Putting it all together :
10. Whip chilled Whipping Cream (320g) for a few second, add granulated Sugar (60g), and sifted Matcha Powder (1 tsp) until stiff peaks form.
NOTE : if your cream is less than 35% fat, then I recommend to add whipped cream stabilizer (I used cremfix here). In case, mix cream stabilizer and sugar together in advance. Add when your cream is getting a soft peak.
11. To assemble, spread a good amount of cream evenly over one crepe. Cover with another crepe. Repeat until all the crepes have been used. Finally cover top and sides of cake with cream. Sprinkle shaved white chocolate. And dust with a dash of matcha powder (if you like).
12. Let chill in the fridge for a few hours until it has set.