Meanwhile, put the soaked agar-agar on medium heat, as soon as it boils, add 350 g of sugar, stir,
when the syrup boils, cook it for 6 minutes. / be careful! the syrup foams/
Note: on the packaging from agar-agar, it was said to cook for 8 minutes, and in the recipe I relied on, it was indicated to cook with sugar for 6 minutes, in the cookbook it was written differently: “…as soon as the agar-agar boils, put sugar on it and cook until a drop of syrup dropped on a plate spreads; after that, put applesauce in the agar-agar and bring it to a boil again.”
In general, I think you need to cook the syrup until the sugar dissolves and the mass thickens.
While the syrup is cooking, beat 2 proteins with a mixer into a fluffy foam.
Cover the baking sheet with baking paper.