Heat up ½ tablespoons of sesame oil in a small pan and fry the Tian Mian Jiang over slowest fire for 2 minutes.
Pour in water and add sugar in and sesame paste. Keep slow fire and continue mixing until well combined. You can continue heating if you prefer a thicker texture. Turn off fire and mix with sesame oil and five spice powder.
The sauce should be thick but also running and it can be kept in fridge for 3-4 days. You can also use the sauce to make Peking style pork stir fry.
