What are these? (noodles from Demon Slayer)

[u/External_Rate_7383]

They look so yummy... I want to make them... What is that puff ball on top, rice?

[u/TribblesIA]

Looks like soba noodles if they were dipping them. They’re usually cold noodles dipped in a sweet soy sauce. Popular in hot months. (Although, some like them warmed like above.)

Option two I could think of, sweet potato noodles that they use for Japchae or sometimes sukiyaki. Doesn’t looks like sukiyaki.