There is some debate as to whether Green tea ice cream originates from Japan or South Korea, Certainly the Japanese have spread the word about it and why not as it is a very unique flavoured Ice cream. Japan and South Korea are still the only 2 countries that I am aware of where it is universally popular.
You need Green tea powder to flavour the ice cream, this can be bought in most Asian supermarkets, the Japanese call it Matcha. I have a large 2 litre bowl in my ice cream maker so you may want to use less milk and cream.
I have used the following Ingredients:
5 tablespoons of Green tea powder
150g of sugar
600ml of double Cream
This is quite simple to make, begin by putting the milk and sugar in a bowl and stir well, and add the double cream and mix further.
In a cup half fill with water and then put 5 heaped teaspoons of Green tea powder in the cup, the more you put the greener it will be. Mix well so the powder is dissolved and then add to the other ingredients in the bowl and stir well.
Put the entire ingredients in your Ice Cream maker and leave, it normally takes between 15 to 30 minutes. Then your homemade green tea ice cream is ready to eat!