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Octopus Vinegared Salad (たこの酢の物, Tako no Sunomono)

Octopus Vinegared Salad (たこの酢の物, Tako no Sunomono)

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Summer cool, and very little work: tender boiled octopus, crisp cucumber, and wakame dressed with sanbaizu so the vinegar brightens the sea without covering it.

Salads
Japanese
Dinner Party
Quick Meal
Outdoor Dining
20 min
Active Time
5 min cook25 min total
Yield4 small servings

Octopus makes people hesitate. It looks like a creature with opinions, and the cook begins to imagine special knowledge. For this sunomono, the hard part has usually already been done for you: buy good boiled tako, slice it thin, and let the vinegar do its clean work.

The one detail that decides the dish is the cut. Slice the octopus thinly against the grain, on a slight diagonal, so each piece stays tender and the dressing can reach every face. Cut it thick and it fights back a little. Cut it cleanly and it eats cool, springy, and sweet, with nothing hidden under sauce.

Sunomono means vinegared things, and this one belongs especially well to summer, when cucumber is full of water and the table wants something bright beside rice, soup, and a grilled or simmered dish. We salt the cucumber first because salt pulls out excess water and seasons it from inside; skip that, and the bowl turns watery just when it should be sharp and clear.

The dressing is sanbaizu, literally three-cup vinegar, though no sensible person needs three cups of it at dinner. Rice vinegar, soy sauce, and mirin, with a little dashi to soften the edge, give you brightness, salt, sweetness, and depth in one small bowl. This is honmono made reachable: a chilled salad, a sharp knife, and the nerve to leave it room.

Sunomono, vinegared dishes, belongs to the aemono and su-no-mono side of Japanese cooking, small seasoned preparations that often appear as a palate-clearing dish in the meal rather than as a large salad. Sanbaizu, the dressing used here, was recorded in Edo-period cookery as a balanced mixture of vinegar, soy sauce, and sweetness, with regional and household variations using mirin, sugar, or dashi. Boiled octopus has long been common in coastal foodways, and in the Kansai region it is especially familiar through dishes that prize its firm, clean chew.

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Ingredients

boiled octopus tentacle (yude-dako)

Quantity

200g

chilled

Japanese cucumbers

Quantity

2

thinly sliced

sea salt

Quantity

1 teaspoon

for drawing out the cucumber

dried wakame

Quantity

5g

rehydrated and trimmed

rice vinegar

Quantity

3 tablespoons

soy sauce

Quantity

1 tablespoon

mirin

Quantity

1 tablespoon

dashi

Quantity

2 tablespoons

sugar (optional)

Quantity

1 teaspoon

toasted white sesame seeds

Quantity

1 teaspoon

ginger

Quantity

1 small knob

peeled and finely grated

Equipment Needed

  • Sharp slicing knife, preferably a yanagiba or a thin chef's knife
  • Small bowl for salting cucumber
  • Fine-mesh strainer
  • Small pan for warming mirin

Instructions

  1. 1

    Salt the cucumber

    Slice the cucumbers as thinly as you can, then toss them with the salt and leave them for 10 minutes. The salt draws out water and seasons the slices all the way through, so the finished salad tastes crisp instead of diluted. Rinse briefly, then squeeze gently in your hands until the cucumber feels supple but not crushed.

    Don't wring the cucumber like laundry. A gentle squeeze keeps its shape and leaves enough snap for the bowl.
  2. 2

    Wake the wakame

    Soak the dried wakame in cold water for about 5 minutes, just until it opens and turns glossy green. Drain it well and cut away any tough stems. Cold water keeps the seaweed clean-tasting and firm; hot water makes it slack.

  3. 3

    Slice the tako

    Pat the boiled octopus dry and slice it thinly on a slight diagonal, cutting against the grain of the tentacle. Use one clean pull of the knife if you can. Thin slices stay tender, and the wide cut faces catch the sanbaizu instead of shedding it.

    This is where the knife does the seasoning. A clean cut gives the vinegar more surface to touch, and the octopus tastes brighter for it.
  4. 4

    Make sanbaizu

    In a small pan, warm the mirin just until its raw alcoholic edge softens, about 30 seconds. Take it off the heat and stir in the rice vinegar, soy sauce, dashi, and sugar if your vinegar is especially sharp. The dressing should taste bright first, then rounded, not sweet like syrup.

    For a meatless table, use konbu and dried shiitake dashi. That is the temple-kitchen way, and it is honmono, not a compromise.
  5. 5

    Dress and rest

    Combine the cucumber, wakame, and sliced octopus in a bowl. Spoon over the sanbaizu and toss lightly, then let it stand 5 minutes in the refrigerator. That short rest lets the vinegar settle into the cut faces without stealing the cucumber's crispness.

  6. 6

    Plate quietly

    Lift the salad from the dressing and mound it lightly in small bowls, giving each serving cucumber, wakame, and three or five slices of tako. Spoon a little dressing around the base, not over the top. Finish with grated ginger and sesame seeds, and serve chilled.

Chef Tips

  • Buy yude-dako, already boiled octopus, from a fishmonger who sells it cold and glistening fresh. If it smells strongly fishy or feels slimy rather than clean and firm, choose another dish. Sourcing first, always.
  • Japanese cucumbers are best here because they have thin skins, few seeds, and a clean crunch. An English cucumber is a sensible stand-in. Scoop out watery seeds if the center looks loose.
  • Make the sanbaizu small and sharp. Sunomono is not meant to swim. Dress, rest briefly, then lift the ingredients out so the bowl stays composed.
  • If you make your own dashi, keep it clear and gentle. Don't use instant powder here; this is a small dish, and flat saltiness has nowhere to hide.

Advance Preparation

  • The sanbaizu can be made up to 2 days ahead and kept refrigerated.
  • The cucumber can be salted and squeezed up to 4 hours ahead. Keep it covered and cold.
  • Slice and dress the octopus within 30 minutes of serving. It is best cool and fresh, before the vinegar tightens it.

Frequently Asked Questions

Nutrition Information

1 serving (about 115g)

Calories
80 calories
Total Fat
1 g
Saturated Fat
0 g
Trans Fat
0 g
Unsaturated Fat
1 g
Cholesterol
24 mg
Sodium
720 mg
Total Carbohydrates
7 g
Dietary Fiber
1 g
Sugars
3 g
Protein
8 g

Note: Chef personas and recipes are created with AI assistance. Cook with care: follow safe food-handling practices, check doneness with a thermometer when needed, and adapt for allergies and your kitchen.

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