Gently bruise the leaves in a mortar and pestle or with the back of a spoon.

Put the crushed leaves, flowers and stems in a pan along with the water, lemon juice and lemon peel. Add the hibiscus flower if desired. Make sure everything is submerged.

Heat the mixture until it is just below boiling point and let it steep for about 3 minutes, without allowing the water to actually boil.

Take the pan off the heat, put the lid on and leave the mixture to steep for a day.

The next day, strain the mixture and collect the liquid in a clean (!) bottle or jar. How to clean glass jars and bottles thoroughly? First, pour boiling water over them (don't forget the lid) and then place the jar/bottle in an oven at 100°C for ten minutes.

Squeeze the flower parts well; they contain lots of valuable moisture.

Next, add the apple cider vinegar, rose water and maple syrup. Finally, add the daisy tincture.

Close the bottle or jar and shake well. The syrup will keep for about 1½ months in the refrigerator.