Pour the almond flour and powdered sugar mixture into a large bowl, then add the egg white in batches. Knead well after each addition to achieve a smooth, homogeneous texture.
Knead carefully before adding more egg white to prevent the paste from becoming too soft. If kneaded properly, you’ll get a very supple, fine-textured paste without needing to add extra liquid.
Note: Knead for about ten minutes. The paste will become more malleable and elastic, allowing you to roll it out very thinly without tearing.
Your marzipan is now ready to use. You can roll it out to cover a cake, shape it to create decorations, or even use it as a filling for chocolates.