Chai Gelato

This is basically a bastardization of a recipe for Green Tea Gelato, I'd already tried making. It worked well for the green tea, and I figured that almost any kind of tea could be substituted in. I wasn't sure how great the chai would work so I halved the recipe. I have to say though, it came out pretty tasty. The chai taste is pretty strong so keep that in mind.
Recipe:
Ingredients:
3 1/4 cups whole milk (but I used skim and there wasn't a problem)
8 green tea bags
1/4 cup powered fat free milk
8 Large egg yolks
1 cup granulated sugar
1 cup heavy cream

Directions:
Place the milk in a medium saucepan and heat to a simmer. Pour half of the milk over the tea bags in a medium bowl and let steep for 30 minutes; strain, pressing all liquid from the tea bags. Stir powdered milk into remaining milk and keep warm over low heat. Place egg yolks and sugar in a medium bowl. Using a hand mixer or whisk, beat until thick and pale yellow (the consistency of mayonnaise). While mixing, slowly add the hot milk and whisk until blended. Stir the egg mixture back into the saucepan and add the tea-infused milk; increase the heat to medium. Stir the mixture constantly with a wooden spoon, until the mixture is thickened like a custard sauce and registers 180 degrees when checked with an instant thermometer (I didn't bother using the thermometer. A way to know if you have a custard sauce is that the liquid will coat the back of a wooden spoon). Strain the custard through a fine mesh strainer into a medium bowl. Stir in cream and refrigerate at least 6 hours. Then just put in your ice cream freezer like normal.