Citrus mascarpone semifreddo with Manjimup walnut & cacao nib dukkah (Russel Blaikie)

Semifreddo

• 250 g sugar
• 1 lemon, peel (no white pith) and juice
• 1 orange, peel (no white pith) and juice
• 8 egg yolks
• 500 g mascarpone cheese
• 150 g pouring (whipping) cream

Walnut & cacao nib dukkah

• 40 g shelled unsalted pistachio nuts
• 40 g walnuts
• 30 g Rapadura sugar
• ⅛ tsp ground cinnamon
• 1 orange zest only (no white pith)
• 20 g sesame seeds
• 20 g pepitas
• 60 g buckinis (activated buckwheat)
• 60 g raw cacao nibs
• fresh berries, to garnish