Fragilité - Danish Almond Meringue Cake with Mocha Buttercream

Fragilité © kvalifood.com

Fragilité is a classic Danish pastry cake invented around 1910 by the Copenhagen pâtissier Johannes Steen - the same man behind the Sarah Bernhardt cake. Despite its French name, it is a Danish invention, strongly influenced by the French pâtisserie tradition that dominated Danish confectionery at the beginning of the 20th century. The cake consists of crisp, airy almond meringue layers and a silky smooth mocha buttercream, cut into small, elegant pieces. Variations with nougat, raspberry, or pistachio exist, but the mocha buttercream is the classic and most widespread version.

Ingredients

Makes approx. 16 pieces (4 baked layers, each 16x22 cm / 6x9 in)

Almond meringue layers:

  • 200 g almond flour (or finely chopped blanched almonds)
  • 350 g sugar
  • 4 egg whites (approx. 120 g)
  • 25 g hazelnut or almond flakes (for the top layer)

Mocha buttercream:

  • 180 g (¾ cup) soft butter
  • 150 g (1½ cups) icing sugar
  • 4 pasteurised egg yolks
  • 1½ tbsp freeze-dried coffee dissolved in 1 tbsp hot water (or 3 tbsp espresso)

To serve:

  • Icing sugar for dusting

Directions

Meringue layers

  1. Preheat the oven to 300°F (150°C) fan. Draw four rectangles (16x22 cm / 6x9 in) on baking paper. Flip the paper over.
  2. Whisk the egg whites to stiff peaks with half the sugar. Add the rest of the sugar and whisk to a glossy, firm meringue.
  3. Gently fold in the almond flour. Spread evenly over the four rectangles. Sprinkle hazelnut or almond flakes on one layer (the top).
  4. Bake for 25-30 minutes until the layers are light golden and dry. Cool completely on the tray.

Mocha buttercream

  1. Beat the butter until soft and airy. Add the icing sugar and beat until smooth. Add the egg yolks one at a time. Stir in the coffee and adjust to taste.

Assembly

  1. Carefully lift the layers off the baking paper (they are fragile). Build up: base - cream - base - cream - base - cream - top layer with nut flakes.
  2. Press lightly. Refrigerate for a minimum of 3 hours, ideally overnight.
  3. Cut with a warm, dry knife into 16 pieces, approx. 4x5.5 cm (1.5x2 in).
  4. Dust with icing sugar before serving.

Notes

  • The layers can be baked the day before; the assembled cake can be frozen.
  • If the buttercream splits: warm 1 tbsp cream and whisk it in while the mixer is running.
  • Variations: add 100 g nougat to the cream, or use fresh berries as a garnish.
  • The cake keeps for up to 1 week in the refrigerator.