Are cold sesame noodles Japanese? Chinese? Made-up American? ?

Well, you have the Chinese dish described by Cathy and also the Japanese cold soba where you can add some sesame.

chilly sesame noodles sounds sturdy for dinner...mmmmmm. I had a grilled poultry rice bowl from a fave quick lunch position - it is our "established" there. My loved places a lot of warm sauce on his yet I only upload a teeny bit (i don't love to devour molten lava in quite a similar way that he does), and we've ice tea with it. as we communicate, there develop right into an endemic of attorneys contained in the little eating section, so as that made it quite a lot less relaxing. We complete straight away and did our submit-lunch smooching elsewhere. That section develop into deeply religious...fo' shizz. (((Schmecky)))

Either Japanese or Chinese, depending on the way it's served. I'm not very sure what are the differences are, but essentially it's different in the method of preparatino and method of serving. In Japanese, it's called soba. In Chinese, it's called liang mian.

In Japanese cuisine: soba noodles (made from buckwheat flour) are brown in color and are served cold. They are dipped into a sauce before eating, you can use a sesame flavored sauce if you want.

I haven't had any other cold noodles with a sesame flavor, the only other cold Asian noodles I've had the glass noodles in Thai salad Yum Yai. (Which is good, btw).

yes they are, and they are also quite good

You mean the noodles with egg, ham, cucumber, bean sprouts, served with cold sesame sauce? That's Chinese. It's called "liang mien"