Kyoto-Style Yudōfu Tofu Hot Pot with Ponzu

Why You’ll Love This Recipe

• Gentle, soothing flavors that highlight excellent tofu and clean kombu broth.
• Fast and low-effort: minimal chopping, one pot, dinner in under 30 minutes.
• Light yet satisfying, naturally dairy-free with easy vegan options.
• Tableside serving feels special without fuss—perfect for a calm weeknight.

Grocery List

• Produce: 2 blocks tofu, scallions, fresh ginger (for gingered soy), optional mushrooms (shiitake or enoki), napa cabbage, yuzu or lemon (optional)
• Dairy: None
• Pantry: Dried kombu, soy sauce, mirin, ponzu, toasted sesame seeds, shichimi togarashi (optional)

Full Ingredients

Hot Pot (Yudōfu)

• 6 cups (1.4 L) cold water
• 1 piece dried kombu, 4 x 4 in (10 x 10 cm) or 10 g
• 2 blocks soft or medium-firm tofu (14 oz / 400 g each), drained and cut into 1.5 in (4 cm) cubes

Dipping Sauces

• Ponzu: 1/2 cup (120 ml) ponzu
• Gingered Soy: 1/4 cup (60 ml) soy sauce, 1/4 cup (60 ml) hot kombu broth, 1 tbsp mirin, 1 tbsp finely grated fresh ginger (with juices)

Garnishes

• 3 scallions, thinly sliced on a sharp bias
• Optional: 1 tsp toasted sesame seeds; pinch shichimi togarashi; tiny strips of yuzu or lemon zest

Optional Add-Ins (keep it minimalist—choose one or two)

• 4–6 shiitake mushrooms, stems trimmed
• 4 oz (115 g) enoki mushrooms, trimmed
• 2 cups (140 g) napa cabbage, bite-size pieces
• 2 cups (60 g) mizuna or spinach

Step-by-Step Instructions

Step 1: Build a gentle kombu base

Wipe the kombu with a damp cloth to remove any surface salt, leaving the white bloom intact for flavor. Place it in a wide pot or donabe with 6 cups cold water and let it soak for 10 minutes (30 minutes for deeper umami, if you have time).

Step 2: Pre-cut the tofu neatly

Drain the tofu and cut into 1.5-inch (4 cm) cubes. Keep the cuts clean and even so the tofu warms uniformly and is easy to lift without breaking.

Step 3: Heat, but never boil

Set the pot over medium-low heat and warm gradually. When tiny bubbles appear at the edges (about 175°F/80°C), remove the kombu. This prevents slimness and bitterness. Gently slide in the tofu. Keep the broth between 170–180°F (77–82°C)—steaming and quivering, not boiling—and warm for 6–8 minutes until the tofu is hot through and slightly jiggly.

Step 4: Mix the dipping sauces

Pour ponzu into small individual bowls. For gingered soy, stir together soy sauce, mirin, and grated ginger, then thin with 1/4 cup hot kombu broth from the pot. Taste; it should be bright, savory, and gently warming.

Step 5: Garnish and serve immediately

Using a slotted ladle or mesh skimmer, transfer tofu cubes to warm bowls. Sprinkle generously with sliced scallions and, if you like, toasted sesame seeds. Serve with dipping sauces on the side. Sip a little of the hot kombu broth from the bowl between bites—it’s soothing and aromatic.

Step 6: Keep the pot going

If serving at the table, keep the pot over the lowest heat to maintain 170–180°F (77–82°C). Add any optional mushrooms or greens during service; they will soften in 2–3 minutes. Top up with hot water if the level drops, and season the broth only at the end if you plan to sip it.

Pro Tips

• Do not boil: gentle heat keeps the tofu silky and the kombu broth clean, not cloudy.
• Use a wide pot: gives tofu space so pieces don’t bump and break.
• Warm your bowls: a minute of hot water rinse prevents the tofu from cooling too quickly.
• Slice scallions thin: delicate rings release flavor without overpowering the tofu.
• Taste balance: if gingered soy is too salty, add more hot kombu broth 1 tsp at a time.

Variations

• Kyoto-style simplicity: tofu, kombu, scallions, and ponzu only—no add-ins.
• Sesame dip: whisk 2 tbsp toasted tahini or Japanese nerigoma with 2 tbsp soy sauce and 2–3 tbsp hot kombu broth for a creamy, nutty dip.
• Non-vegetarian dashi: after removing kombu, add a loose handful (10 g) katsuobushi, steep 2 minutes, then strain for a classic katsuobushi-kombu broth.

Storage & Make-Ahead

Best enjoyed fresh. Kombu dashi can be made up to 3 days ahead and refrigerated; reheat gently. Dipping sauces keep 3 days chilled (ginger may mellow slightly). Leftover cooked tofu can be refrigerated in its broth for up to 24 hours; reheat gently to just steaming—do not boil. Freezing is not recommended as it alters texture.

Nutrition (per serving)

Approximate: 200 calories; 18 g protein; 10 g fat; 8 g carbohydrates; 1 g fiber; 900 mg sodium (varies with sauce and brand of soy). Values are estimates.