Sunomono Recipe: Japanese Vinegared Cucumber Salad

Sunomono (su = vinegar, mono = thing) is Japan's answer to the Western salad — but lighter, more acidic, and specifically designed to function as a palate reset between richer dishes. A small portion of sunomono alongside tonkatsu, at the start of a sushi course, or between the rice and grilled fish in a teishoku set meal has a specific function: to cleanse.

It's also one of the fastest preparations in Japanese cooking — 10 minutes, no cooking except blanching if you add wakame seaweed.

---

The Sanbaizu Dressing

Sanbaizu means "three-flavor vinegar" — the three flavors being sour (rice vinegar), salty (soy sauce), and sweet (sugar or mirin). It's the foundation of all sunomono.

Basic sanbaizu:

• 3 tablespoons rice vinegar
• 1 tablespoon soy sauce
• 1 tablespoon sugar (or mirin for more depth)

Whisk together until sugar dissolves. Taste — the balance should be refreshingly sour, not puckeringly acid. Adjust sugar if too sharp.

Variations:

• Add 1 teaspoon dashi for a deeper, umami sanbaizu
• Add yuzu juice (2 teaspoons) for citrus brightness
• Add a few drops of sesame oil for a nuttier version

---

Classic Cucumber Sunomono

Ingredients (2-4 servings as a side):

• 2 Japanese cucumbers (thin-skinned, low seed, more delicate than English cucumber) — or 1 English cucumber
• 1 teaspoon salt
• Sanbaizu dressing (above)
• Sesame seeds to garnish

Method:

1. Slice cucumber as thin as possible — 1-2mm rounds. A mandoline produces perfect, consistent thin slices. Without a mandoline, use the sharpest knife you have and work slowly.

2. Toss slices with salt in a bowl. Rest 5-10 minutes — the salt draws out moisture. Squeeze the cucumber firmly between your palms to remove as much water as possible. The cucumber should be slightly wilted but still crisp.

3. Dress with sanbaizu. Toss gently.

4. Refrigerate 10-15 minutes before serving. The cucumber continues to absorb the dressing; serve within 1 hour for best texture.

5. Plate in a small bowl or on a small plate. Garnish with sesame seeds.

---

With Wakame and Shrimp

The most complete version — ebi to wakame no sunomono (shrimp and wakame seaweed sunomono):

Additional ingredients:

• 5g dried wakame seaweed (rehydrated in cold water 5 minutes, drained, squeezed)
• 6-8 medium shrimp, cooked and peeled
• Thin slices of fresh ginger (optional)

Method: Prepare cucumber as above. Combine with squeezed wakame, cooked shrimp, and ginger. Dress with sanbaizu. The seaweed adds marine depth; the shrimp add protein and a contrasting texture to the cucumber.

---

Serving Notes

Sunomono is served cold, in small quantities — typically 2-4 tablespoons per portion. It's a supporting actor, not the main event. The portion size is intentional: enough to cleanse the palate, not enough to be a full salad course.

In a Japanese set meal, sunomono appears at the beginning (as an appetizer alongside edamame) or between the main protein and rice courses.

Make-ahead: The cucumber starts to lose its crunch after 2 hours in the dressing. Prepare the components separately and dress just before serving if making ahead.

---

The Borderless Angle

Sunomono is structurally identical to Italian insalata di cetrioli (cucumber salad with vinegar), Greek tzatziki (without the yogurt), or Scandinavian cucumber pickles. All traditions discovered that cucumber + acid = palate cleanser. The Japanese refinement: the sanbaizu balance is more precisely calibrated, the portion is smaller, and the function in the meal structure is explicit rather than incidental.