For the biscuit Joconde:
- 2/3 cup + 2 tablespoons (100 g) icing (powdered) sugar
- 1 cup (100 g) ground almonds (almond meal)
- 2 1/2 large whole eggs (125 g), room temperature (note #1)
- 1 1/2 tablespoons (20 g) unsalted butter, melted
- 3 tablespoons (25 g) all-purpose flour
- 5 small egg whites (125 g), room temperature (note #2)
- 3 tablespoons (40 g) caster sugar
For the mascarpone cream:
- 1/2 cup + 1 1/2 tablespoons (140 g) mascarpone cheese, slightly softened (note #4)
- 1 cup minus 2 tablespoons (300 g) cold heavy cream, 30% fat
- 1/2 cup (65 g) icing (powdered) sugar
- 1 1/2 tablespoons of cold espresso coffee
- 3/4 tablespoon instant coffee powder
For assembling:
- 1.2 oz. (35 g) roasted hazelnuts
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