01 - In a medium saucepan, combine the cranberries, sugar, and water.
02 - Bring to a boil over medium-high heat, stirring occasionally until the sugar fully dissolves.
03 - Reduce heat and simmer for 15 to 20 minutes, until the cranberries burst and the mixture thickens.
04 - Remove from heat and stir in the freshly squeezed lemon juice.
05 - Strain the mixture through a fine-mesh sieve into a heatproof bowl, pressing the solids to extract as much liquid as possible. Discard the solids.
06 - Let the syrup cool to room temperature. Transfer to a clean glass bottle or jar, refrigerate, and use within 2 weeks.