Defrost strawberries if frozen or cut up strawberries if whole.
Blend your strawberries for a smoother consistency or mash after berries begin to break up for chunkier.
Place strawberries, lemon zest, lemon juice, salt, and sugar into a small saucepan and bring to a simmer over med heat.
Once bubbling, reduce the heat to medium-low and let slowly reduce until berries begin to break up and the liquid is almost gone. This can take between 40-60 minutes depending on how much liquid you have.
Occasionally stir the mixture to prevent burning. Transfer to another container and let cool before use.
