Creating Lemon Meringue Cookies is simple when you follow these step-by-step instructions:

1. Preheat Oven: Preheat your oven to 225°F (110°C) and line a baking sheet with parchment paper.
2. Prepare Egg Whites: In a clean bowl, beat the egg whites until foamy. Add a pinch of salt and continue beating until soft peaks form.
3. Add Sugar: Gradually add the granulated sugar, one tablespoon at a time, while continuing to beat until stiff peaks form and the mixture is glossy.
4. Incorporate Cornstarch and Vinegar: Gently fold in the cornstarch and vinegar, ensuring they are well incorporated.
5. Add Lemon Zest and Juice: Carefully fold in the lemon zest and juice. Avoid deflating the meringue.
6. Pipe Cookies: Using a piping bag fitted with a star tip, pipe small mounds of meringue onto the prepared baking sheet, spacing them a few inches apart.
7. Bake: Place the baking sheet in the preheated oven and bake for about 1 hour. The cookies should be dry to the touch and can easily lift off the parchment paper.
8. Cool: Turn off the oven and leave the cookies inside to cool gradually to room temperature for at least 30 minutes.
9. Dust with Powdered Sugar: If desired, sprinkle powdered sugar on top for additional sweetness and presentation.

By following these steps, you’ll create a delightful batch of Lemon Meringue Cookies that everyone will love!