Preheat oven to 350 degrees F and line a sheet pan with parchment paper.
Mix the ground almonds, sugar and cardamom together until evenly combined.
Mix the egg white into the dry ingredients and mix with a spoon until the dough comes together. This will take around 1-2 minutes. Wet your hands with rose water and shape into stars. Continue to wet your hands with a little rose water to shape each cookie.
If freezing, place the baking sheet in the freezer until the cookies are frozen and then place the cookies in a single layer in a freezer bag.
Bake the cookies for 8-10 minutes until light golden brown. To bake from frozen, bake the cookies for 10-12 minutes until light golden brown.