Grilled Mango Passionfruit Frozen Yoghurt Sundae

Ingredients

• Cheeks of 3 mangoes
• For brushing: grapeseed oil
• To serve: freeze-dried passionfruit powder (optional; see note)
• Passionfruit frozen yoghurt
• 175 gm caster sugar
• 2 tbsp liquid glucose
• 500 gm Greek-style yoghurt
• 80 gm sour cream
• 1 tbsp lime juice
• Pulp of 3 passionfruit
• Passionfruit syrup
• 110 gm caster sugar (½ cup)
• 80 ml lime juice (1/3 cup)