Mix 100 ml (approximately 1/2 cup) of water and the gelatin powder in a bowl. Add the remaining ingredients and 100 ml (approximately 1/2 cup) of water in a saucepan. Cook over medium to low heat for 5 minutes, stirring constantly. Gradually stir the gelatin into the mixture. Stir until the gelatin has completely dissolved.
Pour the mixture into a large baking dish dusted heavily with powdered sugar. Let cool completely in the refrigerator. Cut out 2 cm cubes with a sharp knife. Roll the cubes in powdered sugar and serve.