Ikura Udon: A Comforting and Flavorful Noodle Dish with a Luxurious Twist

Ikura Udon: Recipe

Udon is one of the most forgiving noodle dishes in Japanese cuisine -- the thick, chewy noodles hold up well in hot broth, and the dashi base is straightforward to make from scratch. Adding ikura (salmon roe) as a topping transforms a simple bowl into something genuinely special. The key technique: ladle the hot broth over the noodles first, then add the ikura on top at the last moment. The ikura should sit above the broth line, warmed by the steam but not submerged -- submerging ikura in hot broth cooks the eggs and destroys the pop-in-your-mouth texture that makes it worth using.

Full Red Caviar Collection | Chum Salmon Caviar | Coho Salmon Caviar | Salmon Caviar

Ingredients

Serves: 2 | Active time: 20 minutes | Total time: 35 minutes

Noodles and Broth

• 2 portions fresh or dried udon noodles
• 4 cups water
• 1 piece kombu (dried kelp, approx. 4 inches)
• 1/2 cup loosely packed bonito flakes (katsuobushi)
• 2 tbsp soy sauce (adjust to taste)
• 1 tbsp mirin
• Optional: 1 tsp sake for depth

Toppings

• 4-6 tbsp ikura (salmon roe) -- added on top after ladling broth, just before serving
• 2 green onions, thinly sliced
• 1 sheet nori, cut into thin strips
• 1 tbsp toasted sesame seeds

Optional Add-Ins

• Soft-boiled egg (ajitsuke tamago): marinated in soy sauce and mirin; adds richness and protein
• Sliced shiitake mushrooms: sauteed in a small amount of sesame oil; adds earthy umami depth
• Shrimp or tofu: for additional protein
• Shichimi togarashi: Japanese seven-spice blend; a small pinch adds heat without overwhelming the ikura

Dashi Broth Guide

Dashi is the foundation of the dish -- a clean, umami-rich stock that takes 20 minutes to make from scratch and is significantly better than instant granules for this application.

1. Cold-start kombu: Place kombu in 4 cups of cold water. Bring to a gentle simmer over medium heat (do not boil -- boiling makes the kombu bitter). Remove kombu just before the water reaches a simmer, approximately 10 minutes.
2. Add bonito flakes: Add bonito flakes to the hot kombu water; bring to a brief simmer (30 seconds); remove from heat. Let steep 5 minutes.
3. Strain: Strain through a fine mesh strainer; discard solids. The resulting dashi should be pale golden and clean-tasting.
4. Season: Add soy sauce and mirin; taste and adjust. The broth should be savory and slightly sweet -- not aggressively salty. Add sake if using.

Shortcut: Instant dashi granules (hondashi) dissolved in hot water work acceptably for a weeknight preparation. Use 1 tsp per 1 cup water; season with soy sauce and mirin as above.

Instructions

1. Cook the udon noodles: Bring a large pot of unsalted water to a boil. Cook udon noodles according to package instructions (fresh udon: 2-3 minutes; dried udon: 8-10 minutes). Do not overcook -- udon should be chewy, not soft. Drain and divide between two bowls.
2. Heat the dashi: Bring seasoned dashi to a gentle simmer. Taste and adjust seasoning.
3. Ladle broth over noodles: Pour hot dashi over the noodles until just submerged. The noodles should be covered but the bowl should not be overfull -- leave room for toppings.
4. Add toppings: Arrange nori strips, green onions, and sesame seeds on top of the noodles. Add soft-boiled egg or mushrooms if using.
5. Add ikura last, on top: Spoon ikura generously on top of the other toppings immediately before serving. The ikura should sit above the broth line -- do not submerge it. The steam from the broth will warm the ikura gently without cooking it. Serve immediately.

Caviar Variety Guide

• Chum Salmon Caviar -- large eggs, bold briny flavor; the most assertive choice; holds up well against the savory dashi broth
• Coho Salmon Caviar -- medium eggs, rich and slightly sweet; a balanced choice that complements the dashi without competing
• Trout Red Caviar -- smaller eggs, more delicate and slightly nutty; a lighter option
• Pink Salmon Caviar -- smaller eggs, milder flavor; a good entry-level option
• Rainbow Trout Pearls -- small, jewel-like eggs; visually striking against the golden broth

Nutritional Notes

Ikura is rich in EPA and DHA omega-3 fatty acids, vitamins D and B12, complete protein, zinc, selenium, and astaxanthin -- the carotenoid responsible for its orange color, which has been studied for anti-inflammatory properties. Dashi made from kombu provides iodine and glutamates (natural umami compounds); bonito flakes provide additional protein and B vitamins. Udon noodles are primarily a carbohydrate source -- the protein in this dish comes from the ikura and any optional egg or tofu additions.

Full Red Caviar Collection | Chum Salmon Caviar | Coho Salmon Caviar | Golden Pearls Brook Trout Caviar

Also see: Ikura Ochazuke Recipe | Ikura Donburi Recipe | How to Properly Store Ikura

Watch seafood preparation videos on the Global Seafoods YouTube Channel

Frequently Asked Questions

Why add ikura on top rather than mixing it into the broth?

Hot broth cooks the ikura eggs and destroys the pop-in-your-mouth texture that makes them worth using. Adding ikura on top, above the broth line, allows the steam to warm it gently without cooking it. Eat immediately after adding -- the longer the ikura sits near the hot broth, the more the texture degrades.

Can I use instant dashi instead of making it from scratch?

Yes -- instant dashi granules (hondashi) dissolved in hot water work acceptably for a weeknight preparation. Use 1 tsp per 1 cup water; season with soy sauce and mirin. Scratch dashi has a cleaner, more complex flavor but instant is a reasonable shortcut.

Can I use other types of caviar for this dish?

Yes -- any red caviar works. Chum Salmon Caviar has the boldest flavor and holds up best against the savory dashi. Coho Salmon Caviar is a balanced choice. Trout Red Caviar and Pink Salmon Caviar are milder options. See the variety guide above.

How should I store ikura?

In an airtight container in the refrigerator; consume within 2-3 days of opening. For longer storage, freeze in a vacuum-sealed bag; best quality within 3 months (non-vacuum-sealed) or 6 months (vacuum-sealed). Do not refreeze previously frozen ikura that has been thawed.