I had this in a Korean restaurant before and I remembered wondering what was it, what was this jelly texture thing actually is. And now I know, it is actually a green bean jelly that was made of green bean starch and water and then cook until thicken.
I remembered my mom used to make homemade glue for me. Whenever I wanted glue for my school project, I would run to my mom and she would use hot water and this white flour to make glue. I told my girls perhaps I should keep one packet in my pantry so that whenever you girls need glue, I can make some for you. Haha... Why not, it's edible glue and it's all natural!
I served mine with some sweeten soy sauce plus chili oil. Added some chopped green onion as well. I think I could add more water to make this jelly a bit softer as I found it a bit hard. Would be nice if the texture is softer I think.