1-First Step: Ensure tools are spotless. Wipe your mixing bowl and beaters with vinegar-soaked paper towel to remove grease. This prevents deflating your meringue cookies. Separate 4 cold eggs, then let whites warm to room temperature for 30 minutes. Preheat oven to 200°F (93°C) and line two baking sheets with parchment paper.

2-Second Step: Pour egg whites and 1/4 tsp cream of tartar into the bowl. Beat on medium speed until foamy, about 1-2 minutes. This meringue recipe starts building volume. Gradually add 1 cup superfine sugar, 1 tablespoon at a time, while beating on high. Continue 8-10 minutes until stiff, glossy peaks form. Peaks hold shape when beaters lift; rub a bit between fingers for smoothness.

3-Third Step: Gently fold in 1 tsp vanilla extract with a spatula. Move quickly but carefully, 10-15 folds max, to keep air intact. Your batter for crisp meringue cookies should flow like thick lava from the spoon.

4-Fourth Step: Spoon or pipe 1-inch mounds or kisses onto prepared sheets, spacing 1 inch apart. For vegan adaptations, aquafaba works identically here. Bake at 200°F for 1.5-2 hours until outsides crisp and lift easily from parchment. They remain pale or lightly browned.

5-Final Step: Turn off oven, crack door, and cool cookies inside 1 hour. This dries them fully for that signature snap in quick meringue cookies. Transfer to wire rack for complete cooling. Store as detailed later. Total time: under 3 hours for 40-50 light meringue bites. Test for doneness: they snap crisply and feel dry inside.