How to make
Grate the yellow part of the orange rinds on a fine grater. Put it in a pot and mix with the sugar.
After 12 hours, pour in 4 1/5 cups (1 L) of boiling water.
Once the sugar melts completely (be sure to stir from time to time), add the lemon juice as well.
Strain the syrup and pour it into bottles. Serve it diluted with sparkling water or apple juice.