I eat this for my lunch 2 or 3 times a week.
It is zaru-soba. I normally eat zaru-soba in summer.
Yes, this cold noodle.
We do not have much appetite in summer because of hot temperature. So we have cold noddle in season.
We also eat zaru-udon and hiyashi-chu-ka soba.
We pick noodle with chopsticks and dip in the sauce, then eat.