I start by adding the pumpkin puree, brown sugar, vanilla, and all the spices straight into a cold saucepan. Then I turn the heat to medium-low and stir constantly for about 2 minutes. This step is called blooming, and it wakes up the spices so your latte tastes deeply flavored instead of flat.
Once the pumpkin mixture smells fragrant and looks a shade darker, I pour in the milk and whisk it in well. I let this come to a gentle simmer, never a rolling boil, especially if I'm using oat or almond milk since plant milks can curdle if they get too hot.
Next, I drop in my tea bags or loose chai tea leaves right into the warm milk mixture. I cover the pot with a lid and let it steep for 3 to 5 minutes off the heat. The longer it steeps, the bolder the chai flavor comes through in the final cup.
After steeping, I pour the whole mixture through a fine mesh strainer into a large measuring cup or pitcher. This catches the tea leaves, star anise, and any stray spice bits, leaving behind a silky smooth base that's ready to be poured.
Finally, I give the strained latte a quick whisk by hand, or run it through my milk frother for a few seconds until it's nice and foamy. I pour it into mugs, dust the top with a little extra pumpkin pie spice, and serve it warm right away.