-
1
Place the meat in a cold pot and set over medium heat. Allow the fat to render, turning the slices until the meat is just cooked through and the base of the pot carries a visible film of rendered fat — this foundational richness is the first layer of flavour.
-
2
Add the potatoes and onion to the pot and turn to coat in the rendered fat. Pour in the dashi and add the soy sauce and sugar. Bring to a simmer. Nestle the shirataki noodles among the vegetables. Set an otoshibuta (drop lid) directly on the surface of the liquid — this is where the dish lives or dies: the drop lid maintains even temperature distribution and prevents jostling of the vegetables, ensuring each component absorbs the broth uniformly as the liquid cooks down; resist lifting the lid during simmering.
-
3
Simmer steadily until the potatoes are tender and the broth has reduced to a concentrated glaze that coats every surface. Pierce a potato piece with a skewer — it should meet no resistance. The pot at this stage should be nearly dry, not soupy.
-
4
Add the mirin and the spring onions. Simmer uncovered for a final 2 minutes only. The broth remaining in the pot will take on a lacquered sheen from the mirin and the thin film of meat fat — sight confirms the dish is ready.