Oden Winter Hotpot Broth

Ingredients

• For the ichiban dashi broth
• 20 g kombu, wiped clean with a damp cloth
• 30 g katsuobushi (bonito flakes), added off the boil and steeped
• 2 litres cold water
• For the broth seasoning
• 60 ml soy sauce, light (usukuchi) for Kansai style; regular for Tokyo style
• 60 ml mirin
• 1 tsp salt, to taste; adjust incrementally throughout simmering
• For the oden components
• 600 g daikon, cut into 4–5 cm rounds, surface scored with shallow cross-cuts (kakushi-bocho) after blanching
• 200 g konnyaku, cut into triangles or blocks, blanched to remove astringency
• 200 g ganmodoki (deep-fried tofu patties), blanched briefly to remove excess oil
• 200 g satsuma-age (fried fish patties), blanched briefly to remove excess oil
• 150 g chikuwa (tubular fish cake), cut into sections
• 150 g atsuage (thick-cut fried tofu), blanched briefly to remove excess oil
• 4 eggs, hard-boiled, peeled
• 150 g hanpen (white fish cake), cut into triangles; added in the final 20–30 minutes only
• To serve
• 1 tsp karashi (Japanese hot mustard), served on the side

Method

1. 1
   Combine the kombu and cold water in a large pot. Bring very slowly to just below a simmer — do not boil. Remove the kombu. Bring the liquid to 80–90 °C, add the katsuobushi, steep for 2–3 minutes off the heat, then strain. The dashi should be clear, pale gold, and carry a clean, pronounced umami without any bitterness.
2. 2
   Par-boil the daikon rounds in plain unsalted water for 10–15 minutes, then drain and rinse. Score the cut faces with shallow cross-cuts (kakushi-bocho). Blanch the konnyaku, ganmodoki, satsuma-age, and atsuage separately in boiling water for 1–2 minutes each; drain and pat dry. The blanching water for the fried products will cloud with released oil — discard it. All components should smell clean with no raw bitterness or excess oil.
3. 3
   Season the dashi with soy sauce, mirin, and salt. The broth at this stage should taste complete and satisfying on its own — mild, golden, and deeply savoury — because every ingredient that follows will draw its character from this liquid. This is where the dish lives or dies: a weak or unbalanced broth at this point cannot be corrected by the ingredients; quality ichiban dashi and measured, restrained seasoning are essential.
4. 4
   Add the daikon and konnyaku to the seasoned broth. Bring to the gentlest possible simmer — the surface tension should barely break; no active bubbling. Maintain this temperature for at least 1 hour, preferably 2. Vigorous boiling clouds the broth and risks disintegrating fragile ingredients. The daikon is ready when it is translucent through to the centre and yields without resistance to a skewer.
5. 5
   Add the ganmodoki, satsuma-age, atsuage, and chikuwa to the pot. Continue to simmer at the same barely perceptible heat for a further 30–40 minutes. Taste the broth and adjust salt incrementally — the fried tofu and fish cake products will release flavour as they cook, shifting the seasoning balance. The broth should remain pale gold and clear.
6. 6
   Add the peeled hard-boiled eggs. Simmer gently for 10 minutes. This timing produces a fully set white with a slightly softened yolk; the broth penetrates the surface of the white, creating a golden-tinged outer layer visible on the cut face — one of oden's defining textures. Remove one egg and cut it to verify.
7. 7
   In the final 20–30 minutes before serving, add the hanpen. It should be submerged gently in the broth and warmed through only — its soft, cloud-like texture deteriorates with extended cooking. It is ready when it has puffed slightly and is uniformly warm to the touch but still holds its form.
8. 8
   Serve the components in deep bowls, ladling broth over each portion. Present a small amount of karashi on the side. The mustard heat against the gentle, savoury broth constitutes the definitive oden flavour contrast. Taste the broth in the bowl as a final check: it should be unified, layered, and carry the character of every ingredient that has simmered in it.