Use ripe, in-season fruit for best flavor. Chill fruit before blending to keep slushie cold longer. Frozen fruit can be used to create a thicker texture, reducing the amount of ice. Adjust sweetness gradually. For variations, add fresh herbs, sparkling water, frozen yogurt, or even alcohol for an adult version. Store leftovers in an airtight container in the freezer or refrigerate the fruit mixture without ice for up to 24 hours.