Make a berry syrup: boil the berries, sugar and water in a pan, then simmer for 15 minutes. Push the berries through a fine sieve and allow the juice to cool.
Non-alcoholic version: add the berry juice to each glass of sparkling water.
Alcoholic version: add half a glass of sparkling water and 30 or 60 milliliters (one or two ounces) of vodka to 1/4 cup of berry juice.
To both non-alcohol and alcohol glasses, add a large scoop of vanilla ice cream.
