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Umami-Rich Japanese Potato Salad with Seafood Treasures

Creamy, tangy Japanese potato salad studded with sweet seafood and crisp vegetables.

Janelle

By Janelle

Updated: January 18, 2026

Why I Love This Recipe

Japanese potato salad, or *poteto sarada*, is a comforting staple in Japanese home cooking, a far cry from its Western counterpart. The Japanese version emphasizes a creamier, slightly sweeter flavor profile, and often incorporates unexpected textures and flavors. This version elevates the classic by incorporating cooked shrimp and imitation crab meat, adding a touch of luxury and briny sweetness that complements the savory potatoes and tangy dressing. It's a delightful dish that showcases how simple ingredients can be transformed into something truly special.

  • •Subtle Sweetness - The addition of sugar and rice vinegar to the mayonnaise dressing creates a delicate sweetness that balances the savory potatoes and seafood.
  • •Unexpected Textures - The combination of creamy potatoes, crunchy cucumber and carrot, and the tender seafood provides a delightful textural contrast in every bite.
  • •Umami Boost - A touch of soy sauce adds a depth of umami flavor that enhances the overall taste of the salad.
  • •Make-Ahead Friendly - This salad tastes even better after the flavors have had time to meld, making it perfect for meal prepping or entertaining.
  • •Seafood Symphony - The shrimp and imitation crab provide a delightful oceanic flavor profile that elevates the humble potato to a celebratory side dish.

Ingredients You'll Need

Here's what you'll need – nothing too fancy, just good ingredients that work together beautifully.

  • 2 lbs Yukon Gold potatoes (peeled and cubed)
  • 1/2 lb Cooked shrimp (medium, peeled and deveined)
  • 6 oz Imitation crab meat (flaked)
  • 1/2 English cucumber (thinly sliced)
  • 1 Carrot (peeled and julienned)
  • 1/4 Red onion (thinly sliced)
  • 1/2 cup Mayonnaise (Japanese mayonnaise (Kewpie) preferred)
  • 2 tbsp Rice vinegar
  • 1 tbsp Sugar
  • 1 tsp Soy sauce
  • to taste Salt
  • to taste Black pepper

Step-by-Step Instructions

  1. 1

    Place the cubed potatoes in a large pot and cover with cold water. Add a pinch of salt to the water. The salt seasons the potatoes from the inside out as they cook.

    ~1 min

  2. 2

    Bring the water to a boil over medium-high heat. Once boiling, reduce the heat to medium and cook until the potatoes are fork-tender, about 15-20 minutes. You should be able to easily pierce them with a fork without them falling apart. This ensures they're cooked through but not mushy.

    ~18 min

  3. 3

    While the potatoes are cooking, prepare an ice bath in a large bowl. This will stop the cooking process of the cucumber and preserve its crispness.

    ~2 min

  4. 4

    Once the potatoes are cooked, drain them immediately and return them to the pot. Mash the potatoes roughly using a potato masher or a fork, leaving some chunks for texture. Leaving some chunks contributes to the desired rustic texture.

    ~2 min

  5. 5

    Immediately transfer the mashed potatoes to a large mixing bowl and let them cool slightly. Cooling them slightly prevents the mayonnaise from melting and becoming oily.

    ~2 min

  6. 6

    While the potatoes are cooling, lightly salt the thinly sliced cucumber and let it sit for about 5 minutes. This draws out excess moisture from the cucumber, preventing the salad from becoming watery.

    ~5 min

  7. 7

    Rinse the salted cucumber under cold water to remove the excess salt, then squeeze out any remaining moisture. This step is crucial for achieving the right texture and preventing a salty taste.

    ~2 min

  8. 8

    Add the cooked shrimp, flaked imitation crab meat, sliced cucumber, julienned carrot, and thinly sliced red onion to the bowl with the slightly cooled mashed potatoes. Gently combine all the ingredients.

    ~2 min

  9. 9

    In a separate small bowl, whisk together the mayonnaise, rice vinegar, sugar, and soy sauce until smooth and well combined. This creates the signature sweet and tangy dressing.

    ~2 min

  10. 10

    Pour the dressing over the potato and seafood mixture. Gently fold to incorporate the dressing evenly, being careful not to overmix. Overmixing can lead to a mushy salad.

    ~2 min

  11. 11

    Season the salad with salt and pepper to taste. Remember that the soy sauce already adds some saltiness, so taste before adding more.

    ~1 min

  12. 12

    Cover the salad and refrigerate for at least 30 minutes to allow the flavors to meld together. This also helps the salad to firm up slightly. Serve chilled and enjoy!

    ~1 min

How Do I Know It's Ready?

Potatoes should be easily pierced with a fork, but not mushy. Cucumber should be crisp and not watery.

Frequently Asked Questions

Yes, in fact, it's recommended! The flavors meld together beautifully after a few hours in the refrigerator. Just be aware that the texture might change slightly over time.

Final Thoughts

I hope you enjoy making this Umami-Rich Japanese Potato Salad with Seafood Treasures as much as I do! It's a wonderful dish that's sure to become a favorite in your kitchen. If you try this recipe, I'd love to hear how it turned out – feel free to share your experience and any variations you tried!