Don't know if this is what you are looking for, but found this:

Orange Chai recipe
1 quart water
1 quart milk
1/3 cup firmly packed brown sugar
2 tablespoons grated orange peel
8 single servings orange pekoe tea bags
2 tablespoons vanilla extract

In a 3 to 4 quart saucepan over medium high heat, stir the water, milk, brown sugar and orange peel until boiling. Add tea bags and vanilla extract, reduce heat, stir gently and simmer for 1 to 2 minutes. Cover, remove from heat and let stand 10 minutes.

Pour liquid through a fine strainer into a large pitcher. Serve hot or cold. Yields about 2 quarts.