Combine the chopped cranberries, sugar, water and sea salt in a heavy saucepan, brining to a low boil.
Stir until the sugar is dissolved. Lower the heat to medium and allow to simmer.
Simmer for approximately 10 minutes, stirring sporadically with a wooden spoon. Mixture will be thick and sticky.
Place a fine sieve or colander over a bowl. Strain the mixture through, pressing down lightly on solids to get the excess syrup out.
Whisk the lemon juice into the syrup and place in the refrigerator to cool slightly. The syrup will be ready for use in 10-15 minutes. You can freeze the syrup or store in an airtight container for up to 3 days in the refrigerator.
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