For the Hetscherlbusserl, beat the egg whites until stiff. Add the sugar and continue beating.
Preheat the oven to 170 °C.
Stir in the almonds and the lemon juice and fill the mixture into a piping bag.
Pipe the mixture onto a baking tray lined with baking paper.
Using a wet wooden spoon handle, press an indentation in the center of each biscuit and pour in the Hetscherl jam.
Bake the Hetscherlbusserl for about 20 minutes.