I use the following recipe at home and for the Farmers markets.My girls love it, (and so do I). You can reduce the sugar content to individual taste, but I’ve found the following recipe hits the spot the best…
2 mugs of Frozen strawberries preferably, naturally sweet ones, I rinse them in water, take out the hull and freeze on a tray. Once frozen I transfer them to a freezer bag so they don’t take up so much space.
2 level teaspoons of sugar 1 mug of spring water
Place contents in a blender until no more lumps, and serve immediately. You can replace the water with milk, or vanilla ice cream for a strawberry thick shake.