In a medium-sized saucepan, add spices and herb. Bring to a boil then lower the heat to let it gently simmer until the spices and herb release a wonderful aroma, about 20 minutes. Add in the gula Jawa and stir until it dissolves. Close the lid in the saucepan and let it steeps further for another 15 minutes.
Strain the beverage into serving glasses
Add 1-2 tsp of condensed milk to your taste if you like. Serve immediately
You can add condensed milk, or often called "Bandrek Susu" in Indonesian language if you like. It tastes really good with condensed milk as well :)
Bandrek (Sundanese Sweet and Spicy Drink) https://whattocooktoday.com/bandrek.html