What does とろミノ mean / what is it?

Question

I was watching Samurai Gourmet on netflix today, and in the following scene i tried to read the menu on the left side of the screen:

I marked the item that is interesting me with a red box. If it am not mistaken it reads "Toromino". I was trying to find a meaning via google, but i am completely lost on that one. Any idea what dish that refers to?

Answer 1

とろミノ is made of two words:

• とろ usually means fatty, but it may mean something like melty or soft here.
• ミノ refers to the first stomach of a cow (cows are said to have four stomachs.) Also known as rumen.

Answer 2

Looks like ミノ is an intestine called rumen, used for 'fermentation of ingested feed.' とろ implies a fattiness.

Answer 3

ミノ is called tripe in [UK] English. It requires long cooking (two hours plus) to become soft enough to be palatable, so I think this is probably "cooked tripe".