Prepare the Raspberries: Wash the fresh raspberries gently under cold water and drain them well.
Combine Ingredients: Add raspberries, sugar, lemon juice, and water to a medium saucepan.
Cook the Mixture: Place the saucepan over medium heat and stir gently until the sugar dissolves and the raspberries begin to break down.
Simmer the Sauce: Cook for 5–8 minutes until the raspberries become soft and the mixture thickens slightly.
Strain (Optional): For a smooth sauce, pour the mixture through a fine-mesh sieve to remove the seeds.
Cool and Serve: Allow the sauce to cool before serving. Drizzle over your favourite desserts or store in an airtight container in the refrigerator.