These light and airy forgotten meringue cookies require only 3 ingredients and almost no active effort. The unique method of leaving them in the turned-off oven overnight creates perfectly dry, crisp cookies that melt in your mouth.
Make sure your bowl and whisk attachment are completely clean and free of any grease. Wipe them down with lemon juice or white vinegar before starting. Room temperature eggs are essential. For best texture, use fresh eggs rather than carton egg whites. Avoid making on humid days. Optional: add 1/4 teaspoon cream of tartar to stabilize the egg whites. Store in an airtight container at room temperature for up to 2 weeks. Do not refrigerate.
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