Meaning
A round slice of white fish cake with a pink spiral running through the middle and wavy edges. It is narutomaki, a Japanese fish cake often placed on top of ramen.
Ramen fans use it alongside 🍜 to show a proper bowl: “Homemade ramen, complete with 🍥 on top”. Anime fans recognise it instantly as a noodle garnish. Because of the swirl, it also works as a playful spiral decoration in usernames and captions.