Step 1

In a small saucepan, warm the milk, half and half, and sugar over medium-heat, stirring occasionally. Once the milk is steaming (but not boiling), remove pan from heat. Place the tea bags into the pan, cover and steep at room temperature for 15-20 minutes, stirring occasionally. Remove tea bags, then return to medium-heat.

Step 2

Meanwhile, in a separate bowl, whisk together the egg yolks and vanilla until frothy. Once the milk mixture is re-warmed, add 2 Tbsp. of the hot milk mixture to the eggs, and quickly whisk in until combined. Repeat 2-3 more times with more of the milk mixture, then gradually pour in the remainder of the milk mixture into the egg yolks and whisk quickly until combined.

Step 3

Return the new milk/egg mixture to the saucepan, and cook over medium heat, stirring and scrapping the bottom of the pan constantly until the mixture thickens to a custard and coats the back of a wooden spoon.

Step 4

Immediately strain through a fine-mesh strainer, and then refrigerate until completely cooled (at least 6-8 hours). Then freeze with an ice cream maker according to manufacturer’s instructions.