Start by ensuring your work surface and any tools are clean and dry.

In a large bowl, mix the almond flour and powdered sugar together until well incorporated.

Pour in the egg white and mix with a spatula or your hands until combined; the mixture may be crumbly at first but will come together.

If using, add the almond extract to your mixture and knead until smooth.

Transfer the mixture to a clean, dry surface. Knead the marzipan for about 2 minutes, adding powdered sugar if it feels too sticky.

If you wish to color your marzipan, divide it into sections and add a few drops of food coloring to each section, kneading until the color is uniform.

Shape the marzipan into your desired forms, whether small balls, decorative leaves, or festive figures.