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Simple Japanese Potato Salad (Easy Microwave Method)

Make creamy, crunchy Japanese potato salad with ease! This beloved classic is simple to prepare and has been enjoyed for generations.
Prep Time 20 minutes
Cook Time 20 minutes
Total Time 40 minutes
Course Salad, Side Dish
Cuisine Japanese
Servings 4 servings
Calories 172 kcal

Ingredients
  

  • 2 small to medium potatoes 12.3 ounces, 350g
  • 1 tablespoon vinegar unsweetened
  • ¼ teaspoon kosher salt
  • ¼ + ⅛ teaspoon ground black pepper
  • 1 ¼ cup water
  • 2 teaspoon kosher salt
  • ½ cucumber Japanese, English, or seedless
  • ¼ medium onion 1.5 ounces, 40g
  • 1 slice ham 2 ounces, 55g
  • 4 tablespoons kewpie mayonnaise

Instructions
 

  • Prepare the potatoes: Wash, peel, and cut 2 small to medium potatoes into approximately 1-inch (3 cm) pieces. Soak them in water (not included in the ingredient list) for 5 minutes.
  • Cook the potatoes: Drain the water and place the potatoes in a heat-resistant bowl. Cover loosely with plastic wrap and microwave for 5 minutes. Insert a toothpick—if it comes out soft, the potatoes are ready. If not, microwave for an additional minute, or until they become soft.
  • Mash and season: Discard or wipe any excess water from the bowl. Mash the potatoes with a fork or masher while they’re hot. Add 1 tablespoon vinegar, ¼ teaspoon kosher salt, and ¼ + ⅛ teaspoon ground black pepper, then mix well. Let them cool in the fridge while preparing the other ingredients.
  • Prepare the vegetables: Mix 1 ¼ cup water and 2 teaspoon kosher salt to create salted water. Thinly slice ½ cucumber into coins and ¼ medium onion into thin slices. Soak them in the salted water for 10 minutes. After soaking, squeeze out the excess moisture with your hands.
  • Cut the ham: Slice 1 slice ham into 0.2-inch (0.5 cm) strips.
  • Combine the ingredients: Once the potatoes have cooled, add the squeezed cucumbers and onions, ham, and 4 tablespoons kewpie mayonnaise. Mix well. Taste and adjust with salt and pepper as needed.

Notes

  • Mash and season the potatoes while they’re hot so they become creamy and absorb the flavors well.
  • Soak the cucumbers and onions in salted water to keep them crispy and reduce the onion’s spiciness.
 
Storage Instructions
  • To store: Transfer the potato salad to an airtight container and store it in the fridge for up to 3 days or in the freezer for 2–3 weeks. If you added a boiled egg, it’s best to eat it the same day.
  • To defrost: Microwave the frozen potato salad for about 1 minute, or until it’s thawed, without defrosting it in the fridge first.
Keyword quick