Heat the sugar, 100 g grated coconut and egg white in a pot to approx. 50 °C while stirring constantly. Remove the pot from the stove. Fold in remaining grated coconut. Spread the wafers on 2 baking trays lined with baking paper and use 2 teaspoons to place the coconut mass evenly on the wafers. Bake in the preheated oven (electric range: 175 °C/ convection oven: 150 °C/ gas: level 2) for 15-20 minutes until golden brown. Take the macaroons out of the oven and let them cool down on a cake rack