You can see the recipe with more pictures and the video on the article : ladyfingers Make 2 strips of glued lady fingers “cartouchières”for the side each 35 cm by 8 cm (14 in by 3,2 in) and 2 circles of 18 cm (7 in) in diameter for the bottom (You can make them day before).
Draw 2 strips measuring 35 cm (14 in ) by 8 cm ( 3,2 in ). Turn the sheet over onto the buttered baking sheet, with the design against the sheet.
Place egg whites in bowl of the stand mixer and whisk at medium speed.
When frothy, add 1/3 of the sugar without stopping the stand mixer.
Increase speed slightly.
Add half the remaining sugar when they have risen but are not yet very firm.
When they are almost firm, add the remaining sugar to tighten them and increase the speed to maximum.
Stop as soon as they are firm and smooth. They have to make a bird's beak on top the whisk.
Add the egg yolks and mix gently with a spatula to prevent the meringue from collapsing.
Add the sifted flour all at once.
Gently fold in the mixture, lifting and turning the bowl. Scrape the bottom to blend everything together.
Do not mix or whisk vigorously. The batter must remain frothy, do not try to smooth it.
Fill a pastry bag fitted with a plain tip of 10 or 12 mm
Preheat oven to 180°C ( 350° F ) fan-assisted or 200° C ( 400° F ) static heat.
Arrange sticks, side by side. Leave a slight gap between them. they should be almost touching.
You can space them about 2 mm apart, will stick together as they swell.
Make 2 circles of 18 cm in diameter.
Sprinkle 2 times, at 5 minutes intervals, with a thin veil of powdered sugar.
You can leave them unsprinkled if you want them smooth and not pearly ( a crunchy, pearly layer on top).
Bake 10 to 12 minutes.
Open the oven halfway through cooking to allow steam to escape and close immediately. This prevents the cookies from falling and cracking.
They should be lightly browned to keep them soft. Below, they're a little more golden than they need to be.
Carefully remove from parchment paper as soon as they hold together a little, to avoid breaking them.
The cookies are nicely pearlescent and super soft. Leave to cool.