Cut the marzipan into about 24 pieces. Beat the egg white with the whisk of the hand mixer until stiff, adding salt and sugar. Pour the mixture into a piping bag with a large perforated spout. Line 1-2 baking trays with baking paper. Spray approx. 24 small flat spots.
Put a piece of marzipan on each one. Spray the remaining meringue as tuff onto the marzipan. Dry in the preheated oven (electric cooker: 100 °C/ circulating air: 75 °C/ gas: see manufacturer) for about 2 hours. Keeps for several weeks if packed airtight