Prepare a jelly cream. Pour 60 ml of water into a saucepan with a thick bottom and add sugar and orange zest. Put the mixture on the stove and stir constantly until the mixture boils, and cook over low heat until the sugar dissolves. When bubbles appear, the syrup can be turned off.
Dissolve the gelatin.
Pour the syrup into the prepared gelatin in a thin stream, constantly whisking until the mass increases in volume and turns white (you will feel that the mass will become airy, white and denser.