Heat water with sugar in a saucepan to boiling point. Remove from the heat and allow to cool. Then add elderflowers, citric acid and the washed and sliced lemons. Leave to infuse in a cool place for 3 days - stirring occasionally.
Then fill into bottles and seal well.
TIP: The Houler syrup is the basis for the aperitif "Hugo". Simply pour some syrup into the glass (depending on how sweet you like it), fill up with Prosecco and sparkling mineral water. Decorate with fresh mint (and/or Houler flowers) and enjoy!
Recipe by: Tourist office Partschins/Parcines