Making the matcha tea cream:
- Heat the milk with the matcha tea powder in a saucepan.
- Whisk the eggs and sugar together in a bowl.
- Add the cornstarch to the egg-sugar mixture.
- Gradually pour the hot milk onto the mixture while whisking.
- Transfer the mixture back into the saucepan and cook over low heat until it thickens.
- Spread the cream onto a tray, cover with plastic wrap, and chill in the fridge.
Making the choux pastry:
- Combine the water, butter, salt, and sugar in a saucepan.
- Bring to a boil, then add the flour all at once. Mix vigorously.
- Dry out the dough over medium heat for a few minutes.
- Transfer the dough into a mixing bowl and incorporate the eggs one at a time.
- Transfer the dough into the Tube de Buyer.
- Pipe regular-sized choux on a silicone mat or baking tray.
- Bake at 200°C for 20 minutes.
- Remove the choux from the oven and let them cool on a wire rack.
Making the glaze:
- Mix the powdered sugar, egg white, and mint chlorophyll in a bowl until you get a smooth glaze.
- Dip the tops of the choux into the glaze.
Assembling the choux:
- Transfer the matcha pastry cream into a piping bag fitted with a filling nozzle.
- Fill the choux with the cream.