Crab Sunomono (Japanese Crab Cucumber Salad) – Sweet & Tangy

What Makes This Japanese Crab Sunomono Special

Ever tried an appetizer at the start of meal and found yourself still thinking about it even after dessert? That’s exactly how I feel about my Crab Cucumber Sunomono. 

Crisp cucumber, briny wakame, and meaty imitation crab tossed in a tangy vinegary dressing. It might sound unusual at first, but trust me, it works beautifully.

Sunomono literally means “vinegared things” in Japanese, and it is the quick, tangy dressing that sets it apart from other Japanese salads.

Most sunomono recipes, like our classic cucumber sunomono recipe, keep things simple and that simplicity is what makes them so delicious. 

My version stands out because of the unexpected combination of cucumber, wakame and imitation crab. The slightly salty-briny, tangy-sweet flavours paired with crisp textures just hit differently, and I keep coming back for more.  

I also love how quick it is to prepare. You don’t need hours to marinate; just a few minutes is enough for the flavours to meld.

I often make it for weekday dinners or a delicious side for hibachi parties. It’s a versatile, flavourful side dish that complements any meal without overwhelming the table.

For a different imitation crab salad vibe, I also adore our spicy and creamy mango kani salad — equally tasty but richer and more indulgent. 

Ingredients Japanese Crab Cucumber Salad

Dried wakame seaweed: Wakame seaweed is a type of edible seaweed with a mild, slightly sweet and salty flavour.

You can purchase dried wakame at local Asian grocery stores.

They come in packets of dried small pieces or longer strips.

Once rehydrated, you can cut to size if required. Rehydrated wakame provides a slight briny taste and contrasting soft texture, enhancing the dish.

Cucumbers: Choose a cucumber variety that has thin skin and less seeds. I typically use Persian cucumbers because we don’t have access to Japanese cucumbers. If there are a lot of seeds, remove the seeds to avoid excess liquid in the salad.

Imitation crab: Also known as kani in Japanese, imitation crab is a product that mimics real crab flesh.

They can be found in your frozen section of the supermarket or Asian grocery store.

Be sure to purchase Japanese crab sticks that you can shred into long strips. Surimi chunks or flakes do not work as well. 

Toasted sesame seed: Adds a nutty flavour and a bit of texture to the salad.

Rice vinegar, sugar, soy sauce: The dressing’s base for sweet, tangy, and umami notes.

Variations and Substitutions

Cucumber options: You can substitute Persian cucumbers with continental or English cucumbers. If there are a lot of seeds, remove the seeds to avoid excess liquid in the salad.

Imitation crab stick alternative: Of course you can use real crab meat in place of imitation crab sticks! However, it is more costly and not readily available. Alternatively you can use cooked shrimp in place of imitation crab sticks.  

Protein Swap: Replace crab with prawns, scallops, or tofu for a vegetarian version.

Dried wakame seaweed: If you can’t find dried wakame, you can skip it but definitely worth seeking out if you can! It is a great pantry staple. I use it in miso soups, udon noodle soups or try our refreshing wakame salad. 

Sweetness Level: Adjust sugar to taste — traditional sunomono leans slightly sweet.

Make It Spicy: Add a pinch of shichimi togarashi or chili oil for a modern twist.

Vegan option: Omit imitation crab stick from recipe or substitute with strips of tofu skin or thinly sliced hard tofu.

Gluten free option: If you need a gluten free salad, use tamari instead of soy sauce.

Instructions For How To Make Japanese Crab Cucumber Salad

Rehydrate dried wakame according to packaging. I normally add hot water and let it soak for about 5 minutes. Wakame seaweed will turn a lighter green and is soft and tender once ready to use. 

Wash and thinly slice cucumbers using mandoline or knife. 

In a bowl, add sliced cucumbers and sprinkle with salt. Leave for 5 minutes to extract the moisture from cucumbers. Squeeze salted cucumbers to remove excess water.

Whilst soaking wakame and salting cucumbers, defrost the crab sticks and remove the wrappers. With your fingers, gently pull the strands of crab sticks apart.

In a small bowl, mix dressing ingredients – rice vinegar, sugar, and soy sauce until sugar dissolves.

In a mixing bowl, add sliced cucumbers, wakame and crab. Toss together with dressing.

Sprinkle with toasted sesame seeds to serve.