Heat the water: Bring 1 cup of water to a gentle boil. If using loose-leaf tea, place it in a tea infuser.
Steep the tea: Add the tea bags or infuser to the hot water and steep for 3–5 minutes.
For a stronger latte, go closer to 5 minutes, but avoid oversteeping to prevent bitterness.
Warm the milk: While the tea steeps, heat 1 cup of milk in a small pot over medium heat until steaming, not boiling. Aim for about 150–160°F (65–70°C).
Sweeten and flavor: Stir your sweetener into the hot milk. Add vanilla extract or other optional flavors if you like.
Froth the milk: Use a handheld frother, whisk, or shake hot milk in a heat-safe jar (carefully) to create foam.
You want small, silky bubbles.
Combine: Remove the tea bags or infuser. Pour the brewed tea into a large mug, then add the warm milk, holding back the foam with a spoon. Spoon the foam on top.
Garnish and serve: Finish with a sprinkle of cinnamon or a touch of lemon zest if you like.
Sip while hot.