Hungarian Meringue Cake (Habcsók Torta)

📝 Ingredients

For the Meringue Layers:

• 6 egg whites
• 300 g sugar
• 1 tsp vinegar or lemon juice
• 50 g cornstarch

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For the Cream Filling:

• 250 g unsalted butter (softened)
• 200 g powdered sugar
• 1 tsp vanilla extract
• 100 g finely chopped walnuts or hazelnuts (optional)

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For Garnish:

• Cocoa powder, grated chocolate, or chopped nuts