
This refreshing Japanese wakame salad combines tender seaweed and crisp cucumber in a savory sesame dressing, ready in just 15 minutes and perfect as a healthy appetizer or side dish.

If you have ever sat down at a Japanese restaurant, spotted that small bowl of glistening green seaweed salad, and thought I need to learn how to make this at home, you are in exactly the right place. This wakame salad is bright, savory, a little tangy, and deeply satisfying in the way only simple food done right can be. It comes together in about 15 minutes, costs almost nothing, and tastes like something that took real skill.
Whether you are building a full Japanese meal with seaweed salad on the side, hunting for healthy Japanese seaweed salad ideas, or just craving something refreshing and light, this is your recipe.
Wakame is a type of edible seaweed that has been a staple of Japanese and Korean cooking for centuries. When dried and rehydrated, it softens into silky, tender ribbons with a mild ocean flavor that is never fishy or overpowering. In this salad, it pairs beautifully with thin slices of English cucumber for a classic seaweed and cucumber sunomono-style dish.
Sunomono literally means "vinegared things" in Japanese, and this salad falls right into that tradition. The dressing is built on rice vinegar, soy sauce, and toasted sesame oil, balanced with a touch of sugar and ginger.
Chef's Tip: Do not skip salting the cucumber. That five-minute rest with kosher salt draws out excess water so your salad stays crisp and the dressing clings properly instead of pooling at the bottom of the bowl.
The magic here is in the balance. The dressing hits every note: acidic from the rice vinegar, salty and umami-rich from the soy sauce, nutty and aromatic from sesame oil, and gently sweet from just a pinch of sugar. The ginger and garlic tie it all together without overpowering the delicate flavor of the wakame.
Here is what makes this version especially good:
This recipe also happens to be naturally vegan and gluten-free (with tamari instead of soy sauce), making it one of the most versatile healthy Japanese seaweed salad options out there.
Using good-quality dried wakame and genuine toasted sesame oil makes a real difference in a recipe this simple. These are the few ingredients and tools worth choosing well.
The process could not be more straightforward. While the wakame rehydrates in cold water, you salt the cucumber, whisk the dressing, and by the time those two things are done, you are ready to toss everything together.
A mandoline slicer is genuinely helpful for getting paper-thin, even cucumber slices, but a sharp chef's knife works perfectly well too. The thinner the slices, the more elegantly the salad comes together and the better it mirrors the version you would find served alongside Korean seaweed salad with chopsticks at your favorite restaurant.
The dressing can also be made up to three days ahead and kept in the fridge, which makes weeknight assembly even faster.
Ready to bring it all together? Here is the full recipe:

This refreshing Japanese wakame salad combines tender seaweed and crisp cucumber in a savory sesame dressing, ready in just 15 minutes and perfect as a healthy appetizer or side dish.
Place the dried wakame in a bowl of cold water and let it rehydrate for 10 minutes. It will expand significantly. Drain, squeeze out excess water, and roughly chop any very long pieces.
While the wakame soaks, slice the cucumber into thin half-moons. Toss with the kosher salt in a colander and let sit for 5 minutes to draw out excess moisture. Rinse lightly and pat dry with paper towels.
In a small bowl, whisk together the rice vinegar, soy sauce, toasted sesame oil, sugar, grated ginger, minced garlic, and red pepper flakes if using. Taste and adjust seasoning as needed.
In a large mixing bowl, combine the drained wakame and the salted cucumber. Pour the sesame dressing over the top and toss gently until everything is evenly coated.
Garnish with toasted sesame seeds and sliced green onions. Serve immediately or refrigerate for up to 30 minutes before serving to let the flavors meld.
This wakame salad is incredibly flexible. Here are a few ways to serve and riff on it:
However you serve it, this salad brings something genuinely special to the table with very little effort. Once you have a bag of dried wakame in your pantry, you will find yourself making this on repeat.