Cucumber sunomono is a refreshing Japanese side dish that perfectly balances sweet, tangy, and savory flavors. This simple yet elegant dish is often served as an appetizer or a palate cleanser. It's a great way to enjoy the crisp texture and subtle taste of cucumbers, making it an ideal addition to any meal.
One of the key ingredients in this recipe is rice vinegar, which may not be a staple in every household. Rice vinegar is milder and sweeter compared to regular vinegar, and it is essential for achieving the authentic taste of sunomono. If you don't have it at home, you can find it in the Asian section of most supermarkets.

Ingredients For Cucumber Sunomono Recipe
Cucumbers: Thinly sliced to provide a crisp texture and fresh flavor.
Rice vinegar: Adds a mild tanginess and sweetness to the dish.
Sugar: Balances the acidity of the vinegar and enhances the overall flavor.
Salt: Helps to draw out moisture from the cucumbers and enhances the taste.
Soy sauce: Adds a savory umami flavor to the dish.
Technique Tip for This Recipe
To achieve perfectly thin slices of cucumber, use a mandoline slicer. This tool ensures uniform thickness, which is essential for even marination and a consistent texture. If you don't have a mandoline, a sharp knife and steady hand will also work, but take your time to ensure the slices are as thin as possible.
Suggested Side Dishes
Alternative Ingredients
thinly sliced cucumbers - Substitute with thinly sliced zucchini: Zucchini has a similar texture and mild flavor, making it a good alternative in salads and pickled dishes.
rice vinegar - Substitute with apple cider vinegar: Apple cider vinegar has a similar acidity and sweetness, which can mimic the flavor profile of rice vinegar.
sugar - Substitute with honey: Honey provides a natural sweetness and can dissolve well in vinegar, offering a slightly different but pleasant flavor.
salt - Substitute with sea salt: Sea salt has a similar sodium content and can be used in the same quantity to achieve the desired taste.
soy sauce - Substitute with tamari: Tamari is a gluten-free alternative to soy sauce with a similar umami flavor, making it a suitable replacement.
Alternative Recipes Similar to This Dish
How to Store or Freeze This Dish
- To store your cucumber sunomono, transfer it to an airtight container. This will help maintain its crispness and flavor.
- Place the container in the refrigerator. The cool temperature will keep the cucumbers fresh and the flavors well-preserved.
- For optimal taste, consume the sunomono within 2-3 days. Beyond this period, the cucumbers may lose their crunch and the flavors might not be as vibrant.
- If you need to freeze the cucumber sunomono, it's best to do so before adding the vinegar mixture. Simply slice the cucumbers and place them in a freezer-safe bag or container.
- When ready to use, thaw the cucumbers in the refrigerator. Once thawed, mix them with the vinegar mixture as per the recipe instructions.
- Note that freezing may alter the texture of the cucumbers, making them slightly less crisp. However, the flavor should remain intact.
- Avoid refreezing the cucumber sunomono once it has been thawed, as this can further degrade the texture and flavor.
- For added freshness, consider adding a sprinkle of sesame seeds or a few slices of radish just before serving. This can enhance both the visual appeal and the taste of your dish.
How to Reheat Leftovers
While cucumber sunomono is typically enjoyed cold, if you prefer to warm it up slightly, follow these methods:
- Microwave Method: Place the cucumber sunomono in a microwave-safe dish. Cover it with a microwave-safe lid or plastic wrap, leaving a small vent for steam to escape. Heat on low power for about 10-15 seconds. Stir and check the temperature. Repeat if necessary, but be cautious not to overheat as the cucumbers can become mushy.
- Stovetop Method: Transfer the cucumber sunomono to a small saucepan. Warm it over low heat, stirring gently. This method allows you to control the temperature more precisely. Heat until just warm, being careful not to cook the cucumbers.
- Room Temperature Method: If you prefer not to use heat, simply take the cucumber sunomono out of the refrigerator and let it sit at room temperature for about 15-20 minutes before serving. This will take the chill off without altering the texture.
Remember, the goal is to gently warm the cucumber sunomono without compromising its crisp texture and refreshing flavor.
Best Tools for Making This Recipe
Knife: To thinly slice the cucumbers with precision.
Cutting board: Provides a stable surface for slicing the cucumbers.
Mixing bowl: To place the sliced cucumbers and mix them with the vinegar mixture.
Measuring cups: To measure out the rice vinegar accurately.
Measuring spoons: To measure the sugar, salt, and soy sauce precisely.
Whisk: To mix the rice vinegar, sugar, salt, and soy sauce until the sugar dissolves.
Serving bowl: To serve the cucumber sunomono after it has marinated.
How to Save Time on Making This Dish
Pre-slice the cucumbers: Slice the cucumbers in advance and store them in the refrigerator to save time when you're ready to make the sunomono.
Use a mandoline: A mandoline slicer ensures uniform, thin slices quickly, making the preparation faster and more efficient.
Pre-mix the dressing: Mix the rice vinegar, sugar, salt, and soy sauce ahead of time and store it in a jar. Shake well before using.
Quick marination: Let the cucumbers sit in the dressing for at least 10 minutes, but you can also prepare it the night before for a more intense flavor.

Cucumber Sunomono Recipe
Ingredients
Main Ingredients
- 2 units Cucumbers thinly sliced
- ¼ cup Rice Vinegar
- 1 tablespoon Sugar
- 1 teaspoon Salt
- 1 teaspoon Soy Sauce
Instructions
- 1. Thinly slice the cucumbers and place them in a bowl.
- 2. In a separate bowl, mix rice vinegar, sugar, salt, and soy sauce until the sugar dissolves.
- 3. Pour the vinegar mixture over the cucumbers and mix well.
- 4. Let it sit for at least 10 minutes before serving.
Nutritional Value
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