Skip to content
Zaffaron

Sunomono (酢の物) — Japanese Vinegared Cucumber and Wakame Salad

Sunomono is a classic Japanese vinegared side dish served as a palate-cleansing salad in home meals, bento, and multi-course settings. This version pairs crisp salted cucumber with tender wakame in a balanced sweet-sour dressing.

By Zaffaron Kitchen· Published May 26, 2026 Tested Recipe
Vegetarian Vegan Gluten-Free Dairy-Free Nut-Free Halal
Contains: sesame
20 min total Prep 20m · Cook 0m 4 servings 66 cal
↓ Jump to Recipe
Sunomono — Japanese Vinegared Cucumber and Wakame Salad - authentic japanese recipe

Printable Recipe Card

Servings: 4 · Total: 20 min · Difficulty: easy

Ingredients (quick list)

  • 4 Japanese cucumbers (about 600 g total, thin-skinned preferred)
  • 6 g fine sea salt (for drawing moisture from the cucumbers)
  • 8 g dried cut wakame
  • 120 ml rice vinegar
  • 24 g granulated sugar
  • 0.5 inch fresh ginger (peeled and finely grated)
  • 6 g toasted white sesame seeds

Steps (summary)

  1. Place the dried wakame in a bowl and cover it with 500 ml cold water. Let it soak for 8 to 10 minutes, until fully expanded and…
  2. Trim the cucumber ends and slice the cucumbers into very thin rounds, ideally 2 mm thick. Put the slices in a bowl, sprinkle wi…
  3. Rinse the salted cucumber slices briefly under cold running water to remove surface salt. Gather them in your hands and squeeze…
  4. In a separate mixing bowl, whisk together the rice vinegar, sugar, 2 g fine sea salt, and grated ginger until the sugar is comp…
  5. Add the squeezed cucumber and drained wakame to the dressing and toss carefully with chopsticks or tongs. Let the salad rest fo…
  6. Transfer the sunomono to small individual bowls, spooning a little dressing over each portion. Sprinkle with toasted white sesa…

Cultural Background

Vinegared dishes are an important part of Japanese home cooking, bringing acidity and contrast to a meal built around rice, soup, and small side dishes. Sunomono is especially valued in warm months for its cooling clarity.

tangylightly sweetsalinerefreshingcrisp cucumbersilky wakamelight sesame crunchclean rice vinegarfresh gingertoasted sesame🌶 mild

Equipment

cutting boardsharp knife or mandolinemixing bowlsfine-mesh sievemeasuring scalemeasuring jugchopsticks or tongssmall serving bowls

💡 Tips

  • Use slender, thin-skinned cucumbers for the best crunch; if using thick-skinned cucumbers, peel alternating strips before slicing.
  • Do not skip squeezing the salted cucumber, because excess water will weaken the vinegar dressing.
  • Serve sunomono lightly chilled or at cool room temperature rather than icy cold, which can mute the balance of vinegar and ginger.

⚠️ Common Mistakes

  • Leaving too much water in the cucumbers.

    ✅ Fix: Salt the slices for the full 10 minutes, rinse briefly, and squeeze them until no liquid drips freely.

  • Oversoaking the wakame until it becomes limp.

    ✅ Fix: Soak only until expanded and tender, then drain and squeeze it gently before mixing.

  • Adding sesame seeds too early.

    ✅ Fix: Sprinkle sesame seeds just before serving so they stay aromatic and lightly crunchy.

🧊 How to Store

Store leftovers in an airtight container in the refrigerator for up to 24 hours. Drain off excess liquid before serving again, and do not heat; sunomono is meant to be served chilled or cool.

📅 Make Ahead

The dressing can be mixed 2 days ahead and refrigerated. Cucumbers may be sliced and salted 2 hours ahead, but combine everything no more than 30 minutes before serving for the best crunch.

🍽️ Pairs Well With

  • Steamed Japanese rice
  • grilled fish
  • miso soup
  • tamagoyaki
  • chicken teriyaki.

Regional Variations

  • Some Kansai-style versions are slightly sweeter, with a softer vinegar edge.
  • Seafood variations may include cooked shrimp, crab, or octopus for a more substantial side dish.
  • Home cooks sometimes add thinly sliced myoga or shiso for a more aromatic summer version.
everyday washoku ichiju-sansai meal kaiseki meal summer family meal
#classic#washoku#vinegared#light#make-ahead

Ingredients

  • 4Japanese cucumbers (about 600 g total, thin-skinned preferred)
  • 6 gfine sea salt (for drawing moisture from the cucumbers)
  • 8 gdried cut wakame
  • ½ cuprice vinegar
  • 24 ggranulated sugar
  • ½ inchfresh ginger (peeled and finely grated)
  • 6 gtoasted white sesame seeds

🔄 Substitutions

  • Japanese cucumbersPersian cucumbers
  • dried cut wakamefresh salted wakame
  • rice vinegarmild white wine vinegar

Instructions

  1. 1

    Place the dried wakame in a bowl and cover it with 500 ml cold water. Let it soak for 8 to 10 minutes, until fully expanded and tender, then drain it well and gently squeeze out excess water.

  2. 2

    Trim the cucumber ends and slice the cucumbers into very thin rounds, ideally 2 mm thick. Put the slices in a bowl, sprinkle with 6 g fine sea salt, toss evenly, and let them stand for 10 minutes so the salt draws out excess water.

  3. 3

    Rinse the salted cucumber slices briefly under cold running water to remove surface salt. Gather them in your hands and squeeze firmly but gently until they feel crisp rather than watery, because this step keeps the finished sunomono bright and not diluted.

  4. 4

    In a separate mixing bowl, whisk together the rice vinegar, sugar, 2 g fine sea salt, and grated ginger until the sugar is completely dissolved. Taste the dressing before adding the vegetables; it should be cleanly tart with enough sweetness to round the vinegar.

  5. 5

    Add the squeezed cucumber and drained wakame to the dressing and toss carefully with chopsticks or tongs. Let the salad rest for 5 minutes at room temperature so the cucumber and seaweed absorb the seasoning without losing their texture.

  6. 6

    Transfer the sunomono to small individual bowls, spooning a little dressing over each portion. Sprinkle with toasted white sesame seeds just before serving so they keep their aroma and slight crunch.

🪪 Recipe Passport

Origin: Japanese Cuisine
Researched by: Zaffaron Kitchen
Published: May 26, 2026

Cultural Background

Vinegared dishes are an important part of Japanese home cooking, bringing acidity and contrast to a meal built around rice, soup, and small side dishes. Sunomono is especially valued in warm months for its cooling clarity.

Regional Variations

Some Kansai-style versions are slightly sweeter, with a softer vinegar edge.
Seafood variations may include cooked shrimp, crab, or octopus for a more substantial side dish.
Home cooks sometimes add thinly sliced myoga or shiso for a more aromatic summer version.

Researched from multiple sources and validated by the Zaffaron editorial team. Every recipe is tested for accuracy, measurements, and cultural authenticity.

📚 Sources & Cultural References

  • Shizuo Tsuji — Japanese Cooking: A Simple Art — (1980)
  • Elizabeth Andoh — Washoku: Recipes from the Japanese Home Kitchen — (2005)

Sources cited by the Zaffaron editorial team during recipe research. Cultural and culinary references supporting authenticity claims.

Share:

Nutrition per serving

66
Calories
1.6g
Protein
1.1g
Fat
12.4g
Carbs
1.4g
Fiber
330mg
Sodium

Pairs well with

If you enjoyed this recipe, here are a few related Zaffaron recipes to try next.

Does your family make this differently?

Every family has their own version. Maybe your grandmother adds a secret ingredient, or your aunt has a completely different technique. Preserve your family's version — with their name on it, forever.

You Might Also Like

Reviews

Rated 0.0 out of 5 stars
0 reviews

Cooked this recipe?

Tap the stars to rate it — that's all it takes. A few words are welcome but optional.

Please sign in to rate this recipe.
Rated 0.0 out of 5 stars

No ratings yet. Cooked this one? Be the first to rate it — it takes one tap.