Chai coconut and mango delights – perfect Christmas treats

• 4 allspice berries
• 4 cardamom pods
• 1 cinnamon stick
• 3 cloves
• 1 vanilla pod, split
• 2 x 400ml cans low-fat coconut milk
• 1 ripe mango, 1 cheek cut into small dice and set aside to serve, remaining 140g/5oz roughly chopped
• Juice ½ lime
• 4 tablespoon of agar-agar flakes
• 2 crinkly passion fruits, to serve
• Mint leaves, to serve
• Toasted coconut shavings, to serve