Remove stems and quarter strawberries. If using frozen, no need to thaw.
Add strawberries, sugar, and water to saucepan. Bring to a boil, then simmer for 20 minutes. Stir occasionally. Liquid should be deep red and strawberries soft.
Strain the liquid into a container, while resisting the urge to press down on the strawberries, which could cloud the syrup. Refrigerate until cold. Enjoy!