Found a recipe on pantip, translated from google…
https://m.pantip.com/topic/33198147?
”We make the chai drink ourselves. It's very easy. Just have 6-7 black pepper seeds, 3 slices of ginger, 4-5 Cardamom seeds, 4-5 cloves, cinnamon stick,
Assam black tea leaves because it has a rather strong aroma. and fresh milk. We don't boil it with water because we like the nutty aroma of milk. How to make it: Bring one cup of milk to a boil along with various spices and black tea. Boil until bubbles appear, then quickly turn down the heat so as not to overflow the pot. Do this for three rounds. Turn off the heat and add sugar as desired. Strain the spices and pour them into a teacup. You'll get a milk fat topping like an Indian would make.”