Use ripe, in-season strawberries for the best flavor. Reduce sugar or substitute with honey or agave syrup for less sweetness. Add fresh mint leaves for extra refreshment. Frozen strawberries can be used if thawed. Variations include green tea, herbal teas, sparkling water, sugar-free sweeteners, mixed berries, or adding alcohol for a cocktail. Store leftovers in an airtight container in the refrigerator for up to 3 days and stir before serving.