This is from the ice cream parlor site. I had trouble getting it to come up but here it is:

Green Tea Ice Cream

1/3 cup Water
1/3 cup Sugar
2 teaspoons Green Tea
1 cup Heavy Cream
1 cup Light Cream

Combine the water and sugar in a small saucepan over low heat, stirring until the sugar melts and simmer the syrup for 5 minutes. In a separate bowl, mix 1 tablespoon of the syrup with the powdered Green Tea, then add that mixture to the syrup in the saucepan and stir until evenly mixed. Add the light cream and heavy cream, pour into an ice cream freezer, and freeze according to manufacturer's instructions.