The day before you want to make ice cream, put the freezer bowl of your ice cream maker into the freezer to freeze properly.
Then add your coconut milk, coconut cream, sugar, and golden syrup into a pot and heat to a simmer, stirring regularly.
Once it reaches a simmer, remove from the heat and whisk in the vanilla and matcha green tea powder.
Blend the mixture with an immersion blender directly in the pot for 30 seconds. This step removes any remaining graininess from your mixture. If you don't have an immersion blender you can use a regular blender by transferring the mix to a blender jug. Just be very careful that the lid is on firmly as the mix will be very hot.
Transfer the mix to a sealable container and place into the fridge to chill completely, preferably overnight.
When your ice cream maker freezer bowl is frozen, transfer the mix to the bowl and churn until it reaches a soft serve consistency. Depending on your ice cream maker, this could take anything from 20-45 minutes.
Transfer the ice cream from the ice cream maker into a loaf pan and smooth down. Cover with foil and place into the freezer to set completely before serving.
Serve with chopped hazelnuts or pistachios.