Kimpira (alternately kinpira) is a small category of side dishes in Japan typically involving finely sliced or shaved root vegetables. I don't think there's a strict definition, but you sort of know it when you see it. It typically involves sesame seeds or sesame oil, soy sauce, sugar or mirin, and often but not always includes some kinds of chilies. The technique is similar to braising. It might be compared to chorim in Korean cuisine, though the foods typically used for this technique differ between Korea and Japan.
Kimpira renkon
Kimpira gobou, made with burdock root (gobo) and carrot, has made an appearance here. It's the most typical preparation of burdock root in Japan.
For this kimpira, I heated up a bit of sesame oil in a nonstick pan and added sliced renkon. Renkon, known as lotus root in English, is crispy and juicy when cooked briefly. Typically, for kimpira, it would be a good idea to blanch the renkon for a minute or two and then ice shock it. This time, I just used some packaged renkon, which has been boiled in the packing process.
The sesame oil adds a lot of flavor, but it would burn at high temperatures... While I usually prefer to sauté things at high temperatures, that doesn't really work for sesame oil; however, it actually quite matches the goal for kimpira, where the oil is being used more for flavoring than to aid cooking. The oil certainly sizzles and bubbles, but it's not a true "sauté". I'm just kind of heating the renkon and tossing it around occasionally to help it cook evenly.
I season the kimpira with Korean dried chili flakes, because they're handy; other chilies work too. It's not meant to be incredibly spicy, but a little capricious heat is a good thing. Mirin, sugar, soy sauce and occasionally some vinegar are added to taste, and many people would put additional sesame seeds into the dish. It's very forgiving... I can't remember making the dish exactly the same way twice.
The sesame flavor, the nice little crunch, and moderate heat all work together to add a little "stamina" to meals that might primarily feature mild flavors. In small quantities, it will help balance out the rest of the flavors in your meal.