Heat your oven to 180C/350F and line a baking tray with parchment paper.

In a large bowl, combine almond flour and sugar. Tip in egg whites, ground cardamom, and sea salt, and using a spatula or your hands, mix to combine till it resembles a paste.

Dust hands with icing sugar, and shape paste into 2½-cm/1-in balls, and roll in icing sugar. Make an indentation in the center of each ball with your finger, and place 2½-cm/1-in apart on tray.

Bake for 10-12 minutes.

Remove from oven, and transfer tray to a wire rack to cool.⁣