A simply delicious Green Tea Ice Cream recipe.

I first tried Green Tea Ice-cream when I visited my father in Brisbane, Australia, he had taken me to his favorite Sushi Bar, called Sushi Train and he recommended that I try it, I have been searching for a recipe that came close to the amazing taste of the Sushi Train version. After a bit of trial and error, and research, this is what I have come up with:
Ingredients
100ml Double cream
500ml Full fat milk. (UHT works great)
3 Medium egg yolks
110g Castor sugar
8-10g Organic green tea powder (Matcha) (I find eBay a great place to buy this)
Spring of fresh mint to serve. (optional)

1. Pour the cream and the milk into a saucepan and place over a medium heat, whilst stirring, slowly bring just to the boil, then quickly remove from the heat.
2. In a large bowl cream together the egg yolks, sugar and green tea until it has thicken, then slowly add this mixture into the hot cream/milk mixture.
3. Pour the mixture back into the saucepan over a lowish heat and cook for around 12 minutes, continually stirring with a wooden spoon, until the mixture thickens enough to coat the back of the spoon. Do not over cook this mixture as it with curdle and ruin.
4. Sieve the mixture into a clean bowl and allow to cool completely.
5. Place into an ice-cream machine until frozen.
Alternatively if you do not have a machine, place into a freezable container and freeze for two hours then blitz it in a food processor and repeat this process 3-4 times.
6. Remove from freezer/machine, place in a food processor and blitz until smooth and refreeze until needed. This process really smooths the ice-cream and gets rid of any ice crystals that may of appeared.