Use light soy, not dark in order to retain the vibrancy of the corn.
Dumpling wrapper guide can be found in my dumplings page under the Insta guides tab if you're looking to make your own.
For the oil, I simply poured hot oil over spring onions, grated galangal, and a birds eye red chilli. Allow to cool. See my Insta post for the video
Keyword dim sum, dumplings, steamed dumplings, sweetcorn