Smashed Cucumber Shoyu-zuke (Japanese Soy Sauce Pickle) | A Traditional Japanese Technique

A Japanese-style cucumber pickle made by smashing instead of slicing, for extra crunch and quick-absorbing flavor.

Jump to Recipe

About This Recipe

Rather than slicing the cucumber with a knife, this recipe calls for lightly smashing it before pickling — a technique not often seen outside Japan, passed down in Japanese households as a way to bring out the best in the ingredient.

Smashing the cucumber creates countless small cracks and uneven surfaces, allowing the pickling liquid to soak in and season the cucumber quickly, even in a short time. The irregular, broken edges also create a satisfying crunch in every bite, offering a juicier, richer texture than a knife-cut cucumber ever could.

Compared to Western-style pickles, which often highlight the flavor of vinegar and spices, Japanese asazuke tends to preserve the vegetable's natural freshness and texture, letting salt, soy sauce, or dashi bring out its inherent sweetness and umami. This smashed cucumber pickle is a classic example — its crisp, lively bite pairs beautifully with the gentle umami of dashi, the deep richness of soy sauce, and a hint of garlic.

It's easy to make: simply smash the cucumber and let it pickle in a bag with the seasonings. Serve it as a quick side dish, alongside rice, as a snack with drinks, next to grilled fish or karaage, or as a refreshing bite at a barbecue.

 

Ingredients

 

Instructions

1	Trim both ends off the cucumber. Sprinkle salt over the whole cucumber and roll it back and forth on a cutting board using the palm of your hand — a technique known in Japan as itazuri. Rinse off the salt with water and pat dry thoroughly. Tips Trimming the ends removes the tougher, less flavorful parts near the stem and blossom end. Itazuri removes any fine dirt or small spines from the skin, softens the cucumber's grassy smell, brings out a brighter color, and helps the pickling liquid absorb more evenly. Apart from the itazuri step, no salt is added to season the cucumber. Smashing creates fine cracks and uneven surfaces that let the pickling liquid absorb well in a short time, so there's no need to salt it further to draw out moisture. Salting and letting it stand would gradually cost the cucumber the fresh texture and juiciness that make this asazuke what it is.
2	Using a rolling pin, a wooden spatula, or the bottom of a bottle, lightly smash the cucumber — no need to crush it completely, just enough to crack the surface and break it apart in places. Then cut it into bite-sized pieces with a knife, or tear it apart by hand. Tip The irregular, broken surfaces let the pickling liquid soak in well, so the flavor comes through even after a short pickling time.
3	If the seeds are noticeable, remove them with a spoon. Tip Larger cucumbers, including those often found outside Japan, can have large, watery seeds. If they're hard to remove after smashing, halve the cucumber lengthwise and scoop out the seeds with a spoon before smashing. Pat dry if any extra moisture comes out.
4	Place the cucumber, soy sauce, dashi, vinegar, sugar, garlic, and red chili pepper (if using) in a storage bag. Press out the air, then gently massage the bag from the outside so the seasonings coat the cucumber evenly. Tips Using a storage bag lets the seasoning coat everything evenly even in a small amount, and keeps cleanup to a minimum. Start with a small amount of garlic — its aroma grows stronger as the cucumber pickles. Adjust to taste from there.
5	Refrigerate for at least 30 minutes. It's ready to enjoy right away, but letting it sit for 1–2 hours allows the dashi and garlic flavors to come through more. Flipping or gently massaging the bag partway through helps the flavor distribute more evenly.
6	Arrange on a plate, and sprinkle with white sesame seeds if you like for extra aroma and visual appeal.

 

Best Enjoyed

Because smashing the cucumber creates cracks and uneven surfaces, this pickle absorbs flavor quickly and can be enjoyed right away. After 5–10 minutes, the cucumber's fresh aroma and juiciness come through most, for a light, refreshing asazuke flavor. After 30 minutes to 1 hour (recommended), the umami of the dashi and soy sauce settles in nicely, balancing well with the crisp texture. After a few hours to half a day, the flavor penetrates all the way through for a deeper, richer taste — the crunch remains, though the just-made freshness mellows slightly. Adjust the pickling time to suit your taste.

 

If It Tastes Too Mild

The water content of cucumbers can vary quite a bit depending on the variety and size. Larger cucumbers often found outside Japan, or riper ones with bigger seeds, tend to be higher in moisture and can taste milder as a result. If that happens, try one of the following:

• Remove any large seeds with a spoon before using.
• Pat the cucumber dry with a paper towel before pickling.
• Let it pickle a little longer.
• Add ground sesame seeds — this adds nuttiness and richness and helps the liquid cling to the cucumber, making the flavor easier to notice.
• Add a little extra soy sauce to taste.

Start with the base recipe, then adjust to suit the cucumbers you're using and your own preference.

 

Storage

Best enjoyed within 2–3 days, kept refrigerated. The flavor continues to deepen over time, but the cucumber will gradually lose moisture and change in texture. For the freshest, juiciest texture, enjoy it the day it's made or the next day.

 

Quick Version (Using Mentsuyu)

For an even easier version, replace the dashi and soy sauce with 3x concentrated mentsuyu.

Pickling Liquid

• 3x concentrated mentsuyu — 1–1½ tbsp
• Vinegar — 1 tbsp
• Garlic — ¼–½ tsp
• White sesame seeds — 1 tbsp
• Red chili pepper — to taste

If you'd like more sweetness, add ½–1 tsp of sugar. Since mentsuyu varies in saltiness and sweetness by brand, start with a smaller amount and adjust to taste.

 

Variations

Ginger Shoyu-zuke — Use julienned or grated ginger in place of garlic for a more traditional, refreshing flavor.

Spicy Shoyu-zuke — Add a little extra sliced red chili or a pinch of ichimi togarashi for those who like heat.

Sesame Shoyu-zuke — Add more white sesame seeds, or a little ground sesame, for extra nuttiness.

Kombu Shoyu-zuke — Pickle with a piece of kombu for a deeper, more umami-rich flavor over time.

Yuzu Flavor — Scatter a little yuzu zest on top, or use yuzu juice in place of the vinegar, for a fragrant, refined finish. Lemon zest works well as a substitute if yuzu isn't available.