Prep the ingredients: Slice the onion, chop the cabbage into bite-size pieces, cut tofu into cubes, trim mushrooms, and rinse shirataki. Lay everything on a tray so it’s ready to go.
Make the warishita sauce: In a bowl, combine soy sauce, mirin, sake, sugar, and water or dashi.
Stir until the sugar dissolves. Taste and adjust sweetness or saltiness.
Heat the pot: Set a wide, shallow pot or skillet over medium heat. Add oil or a small piece of beef fat if you have it.
Quick-sear some beef: Add a few slices of beef and sear just until the color changes.
This adds flavor to the pot. Don’t cook all the beef yet.
Add the sauce base: Pour in about half of the warishita. Bring to a gentle simmer.
Arrange the veggies: Add tofu, onion, cabbage, mushrooms, and noodles in separate sections of the pot.
Keep a spot open for adding beef as you go.
Simmer gently: Cook 5–7 minutes until the vegetables soften and soak up the flavors. Add more warishita as needed so the ingredients are partially submerged.
Cook the beef to order: Add several slices of beef, swishing them in the simmering sauce until just pink (30–60 seconds). Eat as you go and keep adding more beef and sauce throughout the meal.
Optional egg dip: If using, crack fresh eggs into small bowls and whisk lightly.
Dip cooked beef and hot veggies into the egg for a silky finish.
Adjust and finish: Taste the broth. Add a splash of water if it gets too salty, or a pinch of sugar if you want it sweeter. Keep the pot at a gentle simmer as everyone eats.