Green Tea Ice Cream recipe.

First off the bat, credit for this recipe goes to the Royal Tea Company.
Second off, I have not tried this yet, so I don't know how well it will work yet.
Third, here's the recipe:

• 2 cups heavy cream

• 1 cup whole milk

• 1/4 teaspoon salt

• 6 large eggs

• 2/3 cup sugar

• 2 tablespoons matcha (powdered Japanese green tea)

• Special equipment: an ice cream maker

Bring cream, milk, and salt to a boil in a 3- to 4-quart heavy saucepan and remove from heat.Whisk together eggs, sugar, and matcha in a bowl (tea will not be completely dissolved), then add 1 cup hot cream mixture in a slow stream, whisking vigorously. Whisk custard into remaining cream mixture in saucepan and cook over moderately low heat, stirring constantly with a wooden spoon, until thick enough to coat back of spoon and registers 170°F on an instant-read thermometer (do not let boil).Immediately pour custard through a fine sieve into a metal bowl, then cool to room temperature, stirring occasionally. Chill, covered, until cold, at least 1 hour.Freeze in ice cream maker, then transfer to an airtight container and put in freezer to harden.

By the way, you can buy matcha at any asian market. It's fairly easy to find. You may be able to find it at your local grocery store (meijer or kroger... something like that) in the international aisle.