Korean Gullim Mandu (Round Dumplings)
Instead of a wrapper, the filling is rolled into balls and coated in starch, which the steam turns into a thin, translucent, chewy skin. With nothing wrapped around it, the filling has to hold itself together: the tofu is squeezed hard, the soaked glass noodles are shaken dry, and the mixture is kneaded until a pinch of it no longer cracks.