Mix the white rice flower, the corn starch, the guar gum, the icing sugar, the ground almonds, the salt, the liquid sunflower lecithin, the baking powder and the coconut oil (melted to 25-30°C).
Add the water and finally the lemon zest. Roll out the dough between two sheets of baking paper to a thickness of 4 mm. Bake the biscuits in 4-cm circles at 150°C for 35 minutes.
Then coat with the melted cocoa butter.