Sunomono Japanese Cucumber Salad Recipe brings clean crunch, bright vinegar snap, and a hint of sweetness that wakes up any meal. I reach for this salad when the kitchen feels too warm for cooking and my fridge needs a quick, cool side. You only need a handful of pantry staples, and the process takes less time than heating a skillet. I keep a bowl of sunomono on repeat all summer and it never lasts long.
Why You Should Try This Japanese Cucumber Salad Recipe
You get a crisp, refreshing salad that pairs with sushi night, grilled fish, or a simple rice bowl. The rice vinegar dressing balances sweet, salty, and tangy notes that flatter tender cucumber. I like how the salt treatment keeps the slices crunchy even after a day in the fridge. You mix everything in one bowl and call it done.
I tested many cucumber types and found Persian cucumbers give the best crunch with minimal seeds. English cucumbers also work and slice neatly with a sharp knife or mandoline. I toss in a bit of wakame when I want extra umami without any extra work. A sprinkle of toasted sesame seeds finishes the salad with a nutty aroma that feels restaurant worthy.
Ingredients You’ll Need
Salad
- 2 small Persian cucumbers or 1 English cucumber
Dressing
- 3 tablespoons unseasoned rice vinegar
- 1 to 2 teaspoons sugar, to taste
- 1 teaspoon soy sauce or tamari
- 1 teaspoon water
- Pinch of salt
Mix ins and garnish
- 1 to 2 teaspoons toasted sesame seeds
- 1 tablespoon dried wakame, optional, soaked and drained
- Very thinly sliced red onion or scallion, optional
- A few slices of fresh chili, optional
- Tiny drizzle of sesame oil, optional
How to Make Sunomono Japanese Cucumber Salad
- Wash the cucumbers and trim the ends. Slice them as thin as you can with a sharp knife or a mandoline.
- Place the slices in a bowl and sprinkle a generous pinch of salt. Toss, then let the cucumbers rest for 10 minutes so they release water.
- Rinse the slices under cool water to remove extra salt. Gently squeeze by the handful to remove excess moisture, then set aside.
- In a clean bowl, whisk rice vinegar, sugar, soy sauce, and water until the sugar dissolves. Taste and adjust sweetness or acidity.
- Add the cucumbers to the bowl. Fold in wakame, onion, or chili if you use them, then toss until every slice wears the dressing.
- Sprinkle sesame seeds on top. Chill for 10 to 15 minutes, then serve cold.
Substitutions & Variations
- Swap sugar with honey or maple for a softer sweetness.
- Use tamari or coconut aminos if you want a gluten free option.
- Add grated ginger or a touch of yuzu juice for a citrus lift.
- Fold in thin slices of radish or carrot for color and crunch.
- Use a few pieces of cooked shrimp for a classic seafood version.
- Add a small splash of mirin if you enjoy a gentle round sweetness.
- Skip wakame if you prefer a clean cucumber focus.
Tips
- Slice the cucumber very thin so the dressing coats every piece and the texture stays light.
- Salt the slices and let them sit so the salt draws out water and keeps the salad crisp.
- Rinse and squeeze gently after salting to avoid an overly salty bite.
- Use unseasoned rice vinegar so you control sugar and salt levels.
- Taste the dressing before you add cucumber and adjust sugar or vinegar to your liking.
- Toast sesame seeds in a dry pan for a minute or two for deeper flavor.
- Add a pinch of grated ginger if you love a little zip.
- Chill the salad for 10 to 15 minutes to let the flavors settle before serving.
What to Serve with Sunomono Japanese Cucumber Salad
- Sushi rolls, nigiri, or sashimi platters
- Grilled salmon or mackerel with steamed rice
- Teriyaki chicken or tofu
- Yakitori skewers and a simple miso soup
- Ramen, udon, or soba bowls for a cool contrast
- Bento lunches as a bright, crisp side
Leftovers and Storage Tips
I store sunomono in a covered container in the fridge and keep the texture happy for up to 24 hours. The flavor deepens a bit by the next day, and the slices stay snappy thanks to the salt step. If extra liquid gathers, I pour off a spoonful and give the salad a quick toss. I garnish with fresh sesame seeds right before serving to keep the aroma lively.
Mistakes to Avoid
- You skip the salting step and end up with watery salad. Salt and drain for crunch.
- You slice too thick and the dressing cannot coat well. Aim for very thin slices.
- You over salt and forget to rinse. Rinse and squeeze to balance the flavor.
- You use seasoned rice vinegar and the salad tastes too sweet or salty. Choose unseasoned vinegar.
- You drown the cucumbers in dressing and lose balance. Add dressing gradually and taste as you go.
- You skip chilling time and the flavors feel harsh. Give the salad a short rest in the fridge.
Sunomono Japanese Cucumber Salad
Ingredients
Instructions
- Sprinkle salt on the cucumber slices and let them sit for 10 minutes to draw out excess water.
- Rinse cucumbers under cold water and drain well. Squeeze gently to remove extra moisture.
- In a bowl, mix rice vinegar, sugar, and soy sauce until sugar dissolves.
- Add cucumbers to the dressing and toss to coat evenly.
- Optional: Add rehydrated dried wakame seaweed and mix.
- Sprinkle sesame seeds on top before serving.
- Chill in the refrigerator for 15-30 minutes for best flavor.