Place fresh or frozen cranberries in a sieve. With a wooden pounder or a spoon (it can be a simple spoon also) mash berries against the side and the bottom of the sieve to get as much juice as possible. Set the juice aside.

Boil water and turn off the heat. Add sugar, mashed berries, close the lid and leave for 30 minutes.

Strain the liquid through the sieve lined with a cheesecloth.

Lastly, mix the cranberry juice with the liquid. Taste and add more sugar if needed. Enjoy!