Sadly I do not have any photos, my guess is that you are correct and it was likely a processed cheese of some sort possibly made into a sauce by mixing with milk or something. He had it stored in something similar to an icing bag so it could be squeezed out easily. It has a consistency similar to nacho cheese but not quite as liquid.

Golden week is coming again soon and there may actually be festivities this year so I will keep my eye out for the food cart to see if I can find it again and if so I will definitely take pictures this time and would be happy to share them with you if I can get them.

Hi Sage, I'm so happy to hear you enjoyed this! Thank you for taking the time to let me know. I'm so curious about this cheese sauce. Do you have any photos you could send me? Since it was in Japan the most likely case is that it was made with some kind of processed cheese.

Hey Marc,
Thank you very much for this recipe. I had makiniku for the first time during the Golden Week Festival in Hamamatsu in 2019 from a street vendor and have been trying to recreate the flavor ever since. I have come up with a few recipes based on it since then which have been good but have not quite captured the essence of the dish that I had and some were quite different(all were tasty though). Your recipe is so amazingly close(and possibly better) to what I had back then and I cannot thank you enough for posting it. The only thing missing compared to the dish I first had was the vendor has some sort of cheese sauce in a bag he put over the top before serving which really went well with all of the flavors. I am really not sure what kind of cheese it was, I just remember the dish being one of the tastiest things I have ever put in my mouth.

Thank you again for posting this recipe, it is super exciting to have finally found the recipe I have been searching for. This recipe is definitely going to make it into my regular rotation.

It was very good....It will be included in my repertoire every two weeks as I have some other recipes of yours that I have also included in my weekly menu..
Keep it up, Mark.. you are doing very good and I like your recipes. Thanks agaim.

You're welcome Izzie, I hope you enjoyed it 😄

Thank you for this recipe. It looks very nice...It will our dinner tonight plus some small bokchoy for vegetables side.