Crostata di marmalata (Italian jam tart)

Mixed berry jam

• 1 lemon, zest and flesh only
• 500 g fresh mixed berries (e.g raspberries, blackberries, blueberries - see Tips)
• 250 g Rapadura sugar
• 1 vanilla bean, split lengthways, seeds scraped

Pastry

• 150 g butter, chilled, cut into pieces, plus extra for greasing
• 1 lemon, zest only, no white pith
• 300 g plain flour, plus extra to dust
• 3 egg yolks
• 100 g caster sugar
• 1 pinch salt
• plain flour, for dusting
• plain flour, to dust
• 30 g full cream milk, to brush
• shredded coconut, toasted, to garnish