Wash the strawberries and remove the tops. Quarter the strawberries and add in a bowl with all of the ingredients except the butter. Mix well and let this cure for 30 minutes to one hour.
Strain the strawberries and discard the liquid.Alternatively you can save this strawberry syrup for ice tea, cocktails or other cold drinks. Cook the cured strawberries over medium-low heat in a pan with a lid for about 2 minutes or until it comes to a boil.Once the strawberries have boiled remove the lid and continue cooking until most of the liquid has evaporated (about 5 minutes). Use a spatula to stir the strawberries as they cook to prevent them from sticking to the bottom of the pan.Once you can draw a line with the spatula in the pan (see picture), you're ready to blend.
Add the 1 tbsp of cold butter and blend with the hot strawberries until smooth.
Refrigerate until cold (about 2 hours) or serve warm with savory dishes. Enjoy!