Lemon-Ginger Lemonade

Mix sugar with 1 liter of water and bring to a boil. Peel the ginger and cut it into small, wafer-thin slices. Remove the outer leaves of the lemongrass, halve them lengthwise, and add them as a stalk with the ginger slices to the sugared water. Let everything simmer for about 10 minutes. Then let it cool completely and chill for about 1 hour.

Wash lemons thoroughly with hot water, dry them, and cut them into coarse cubes. Pour the ginger-sugar water with mineral water, add lemons, and serve in glasses with ice cubes.