This must be done a few hours before your party, and notify your guests! They look and taste innocent but can be very deadly! You need 2 sachets of apple or strawberry flavor and a bottle of apple or strawberry arrak. Mix the jelly crystals with boiling water and stir until dissolved. Keep the mixture aside until it cools and pour it into the arack, usually about a quarter of a bottle will do that, but it can change depending on how much you want your shots. Pour the liquid into ice cube trays, take them out and serve them in the refrigerator after a few hours.