1/2 teaspoon of vanilla extract. If your blender is small, blend in two batches and combine in the pitcher.
Food safety tips: Keep the ice cream frozen until you’re ready to use it, and don’t let the finished drink sit out at room temperature for more than 1–2 hours, especially on hot days. Store any leftovers (if there are any!) covered in the refrigerator and enjoy within a day; the texture will soften, but you can whisk or briefly blend again to refresh it.
