Let's enjoy the texture of Tsurun & Tororin more easily! I tried a product called "Onsen tamago", a cooking utensil for hot spring eggs.
A device for easily enjoying hot spring eggs at home. It is a three-layered container with heat insulating material, and it hardens moderately just by putting freshly boiled water with eggs and putting a lid on it.
Cooking time varies depending on the size of the egg and conditions such as "normal temperature, immediately after taking it out of the refrigerator", and it takes about 18 to 25 minutes. I tried it with an egg of M size and room temperature, waited for 18 minutes, and then took it out. It turned into a beautiful hot spring egg with a plump yolk sitting in the center of the milky white meat. Isn't this pretty good! The yolks were quite sloppy, so if you like a little more firming, you should adjust the time. You can also make boiled eggs by extending the cooking time to 35-40 minutes.
Because of its heat-insulating structure, "Onsen pretend" is useful not only for cooking hot spring eggs but also as an ice pail (container for storing ice) for evening drinks. Why don't you prepare one for your home and use it? It is available on various mail-order sites, and the price range is around 1,000 yen. In addition to the 2 pieces introduced this time, 4 pieces are also available.