1 Peel ginger and cut into small pieces. Put in a garlic press and extract juice into a punch bowl or pitcher.
2 Halve and juice lime and add to punch bowl.
3 Rinse strawberries, gently pat dry and halve if large.
4 Rinse blueberries and drain well.
5 Rinse currants, drain in a sieve and remove from stems.
6 Add fruit to punch bowl, mix in sweetener to taste and let stand for about 25 minutes. Pour in mineral water and ice cubes and serve.