Before heating, please ensure to purge your steam wand.
Heat the milk along with the chai mix using the steam wand to approximately 149°F.
The milk should create a whirlpool in the center of the jug. Take care not to introduce too much air by lowering the milk jug, do so only at the start of the process (this creates micro-foam).
Continue to heat the milk with this technique to create a smooth consistency.
Turn off the wand as the milk begins to rise, your milk should not make any high-pitched noises, as this could indicate overheating.