Combine the all ingredients for the teriyaki sauce in a small saucepan (soy sauce, mirin, and sugar).
Bring the sauce to up boil, then reduce the heat to medium/ medium high and let the sauce simmer for 3 to 4 mintues, or until the teriyaki sauce looks thickened and glossy. Make sure to stir constantly the entire time.*The teriyaki sauce will be very bubbly while it's simmering, but will dissipate while cooling. The consistency of the sauce will look kind of thickned but still very fluid while hot. When it cools, it'll become even thicker, so don't over reduce it!*
Transfer the sauce to a bowl and set aside to let cool or until ready to use.
For the Japanese hot dogs:
Place the hot dogs on a preheated grill and cook until the hot dogs are heated through and have some char marks, about 5 to 7 minutes depending on the hot dogs.*You can also cook your hot dogs on a pan over medium heat.*
Place each of the hot dogs into a hot dog bun and brush the hotdog with the homemade teriyaki sauce. You can drizzle it instead as well. Top the hotdog with your desired amount of Kewpie mayo.
Dress your Japadogs with your desired amount of toppings: bonito flakes, thinly cut nori, sliced green onions, and/or toasted sesame seeds. Enjoy immediately.
Please refer to the post for step by step photos, tips, and FAQs!
Japanese hot dogs are usually made with Japanese Berkshire pork hot dogs, but it's not very accessible. So feel free to use any hot dogs you prefer, as long they're long enough to fit in your hot dog buns.
Kewpie mayo - This is a Japanese brand mayo and taste very different to regular mayo. It's a must for Japanese hot dogs.
Teriyaki sauce - Also a must for Japanese hot dogs. You can use store bought ones or our homemade recipe. Just make sure to not over reduce it!
Leftover homemade teriyaki sauce - If you have leftover teriyaki sauce, you can store it in an airtight container, in the fridge, for up to 2 weeks.
Japadog toppings - Besides the teriyaki sauce and kewpie mayo, all toppings are really just optional. But they definitely add flare to the hot dog and adds so much flavor. Highly recommended if you can find the ingredients.