kamatama udon; udon with raw egg and soy-based sauce
A dish of hot udon noodles tossed with a raw egg and typically seasoned with soy sauce, dashi, and sometimes butter or other toppings. The heat of the noodles lightly cooks the egg.
Kamatama udon is a simple dish where you mix a raw egg into hot udon noodles and eat it.
I ordered kamatama udon at an udon shop in Kagawa Prefecture.
From 釜 (kama, 'iron pot') + 玉 (tama, short for 玉子 'egg'), referring to udon served straight from the pot with a raw egg.