Samurai zlash!

I ate a Ise-Udon for lunch.

Ise-Udon is a type of udon.

Ise-Udon's features are thick noodles and black soup.
The black soup is based Japanese sauce (Shouyu).
It's a small quantity and little sweet.
Ise-Udon often has green onion.

Ise is a Japanese city name.
Ise is in Mie-ken.

Ref. Ise-Udon - Wikipedia (in Japanese)