【finger Biscuits】---necessary for Tiramisu
1.
Separate the egg yolk and egg white, add 15 grams of fine sugar to the egg yolk, and whip it by hand until the yolk is larger and lighter in color, and the sugar melts.
2.
Put the egg whites into a clean, oil-free and water-free container, add a few drops of white vinegar, add fine sugar in three times, and beat until almost dry foaming.
3.
Take one third of the meringue and add it to the egg yolk paste.
4.
Stir gently (be careful not to defoam).
5.
Pour it back into the remaining two-thirds of the meringue.
6.
Stir gently and mix evenly.
7.
Sift in low powder, cut and mix evenly in irregular directions. The cut batter is light, fluffy and particle-free.
8.
Put the egg batter into a piping bag, and then extrude the shape in a baking pan covered with greased paper, leaving a little space in the middle, and sprinkle a thin layer of powdered sugar on the surface.
9.
Put it in a preheated oven, 170 degrees, middle level, up and down, and bake for 18 to 20 minutes.
10.
Baked finger biscuits.