Line baking trays with baking paper. Grind the pistachios. Beat egg white and salt until stiff. Add sugar, vanillin sugar and lemon juice while beating. Keep beating until the sugar is dissolved. Mix flour and grated coconut, fold in
Fill into a piping bag with perforated nozzle (approx. 5 mm Ø). Spray approx. 100 small dots onto the sheets. Sprinkle some with 1/3 of the pistachios
Bake cookies in the preheated oven (electric cooker: 150 °C/circulating air: 125 °C/gas: level 1) for 20-25 minutes. Let them cool down
Spread half of the macaroons on the flat side with 1/4 tsp. jam each. Press the rest of the macaroons on it. Roll cookies with jam rim in the remaining pistachios