
Soak agar-agar in water. Leave it to swell while you prepare the raspberry puree.

Prepare raspberry puree. Rub the berries through a sieve, remove the seeds. Heat the puree in a saucepan, pour in 250 g of sugar. The sugar should dissolve. Heat the puree, but do not boil. Remove from heat. Let the mixture cool.

Prepare the syrup. Heat the agar on the fire, pour in the remaining sugar, stir, and bring to a boil. Cook the syrup for 5 minutes until it thickens a little. The syrup should not flow off the spoon, but only leave behind a thin caramel thread. Cool the finished syrup slightly.

Prepare the marshmallow mass. In a large 3-4 liter bowl, beat the raspberry puree with the egg white until fluffy. Slowly pour in the agar-agar syrup, continuing to beat at high power for 10 minutes.

Pipe the marshmallows. Use a pastry bag to form the halves of the marshmallows. Line a tray with parchment. Pipe the halves of the marshmallows onto it. Leave the marshmallows to harden on the table for 24 hours. Roll in powdered sugar. Connect 2 halves together.