Japanese potato salad is like semi-mashed potatoes mixed with vegetables, ham, egg and mayonnaise. Small pieces of carrots, cucumbers, onions, ham and eggs make it visually appealing. It is not too creamy, not too rich, but flavoursome. What makes this potato salad stand out is the mushy texture and the famous Japanese mayonnaise, Kewpie mayonnaise.
I have not tried all the potato salads that exist in the world but I am almost certain that every single cuisine has a potato salad unique to its region. And Japan is no exception. Just like most other Japanese dishes, the Japanese version of potato salad does not use cream at all but it does use the reputable kyuupee mayonehzu (キユーピーマヨネーズ, Kewpie mayonnaise).
The texture of the potato salad is almost like half mashed potatoes but much more flavoursome. Of all the potato salads I have tried, Japanese potato salad is one of my favourites.
There are many variations to the Japanese potato salad and I sometimes change ingredients, too. The basic ingredients are potatoes (of course), sliced carrots, sliced cucumbers, sliced onion, and sliced ham. This is what I use but I sometimes add boiled eggs for extra colour. And this is the recipe that I am introducing today.
Japanese potato salad is a regular home cooking salad. But it is also a regular breakfast side dish served at cafés in Japan. When you order toast at a café in Japan, it often comes with a fresh salad and a small amount of potato salad. Potato salad can also be the filling for sandwiches. I have never seen potato salad sandwiches sold in Sydney but they are quite easy to make. It’s nearly all carbohydrates but aren’t they delicious? I love starchy things – rice, noodles, bread, potatoes…
I think that the major differences between Japanese potato salad and other Western style potato salads are the way potatoes are prepared and the dressing, Kewpie mayonnaise.
Potatoes
As you can see in the photo, the potatoes are semi-mashed and they do not retain the cubed shape like many other potato salads. Naturally, the suitable potatoes for the Japanese potato salad are those suitable for mashed potatoes, i.e. starchy potatoes such as Russet (common in the US), King Edward or Red Delight. But all-purpose potatoes like Golden Delight, Coliban, Red Rascal and Sebago (popular in Australia) still work. I actually used Sebago. Starchy potatoes become nice and fluffy when cooked and mashed.
The professional method of boiling potatoes is to boil them whole with the skin on. Potatoes boiled with the skin on are fluffier and less watery, which is the key to the Japanese potato salad. But the down side of this method is that they take a long time to cook and peeling the skin while still hot is a bit of a challenge.
I used this method but the potatoes were quite large and it took me about 40 minutes to cook through the potatoes. When peeling the skin, I used a cloth to hold the potato but I couldn’t help saying, “Ouch! Ouch! Hot, hot!”. It was a hard work.
If you don’t have much time, you can peel the potatoes and cut them into smaller chunks, perhaps into quarters or 6 pieces, then boil. I wouldn’t recommend cutting them smaller than that so that the potatoes can retain as much fluffy texture as possible. I would also recommend that, after draining the potatoes, you dry the potatoes by cooking them over high heat in a pot for 15-20 seconds. Shake the pot while heating so that moisture of the potatoes evaporates without burning them.
Other Ingredients
The least number of ingredients of the potato salad I have seen was 4, not including dressing. Potatoes, sliced carrots, cucumbers and onions. So these are the minimum ingredients to make Japanese potato salad. I guess the basic colours are there if you serve with a green salad leaf or a parsley sprig.
Thinly sliced ham is very common in the salad and my memory of potato salad always had sliced ham in it. Boiled egg cut into tiny diced pieces are often added, too. Sometimes you will find corn kernels in it. Instead of ham, prawns could be used but I would not call it a very traditional Japanese potato salad.
Kewpie Mayonnaise
Unless you use Kewpie mayonnaise, it won’t be Japanese potato salad, I am afraid. It just tastes different if you use other types of mayonnaise. Kewpie mayonnaise is not like the Western style mayonnaise at all. It is creamy and less sour. There is something about Kewpie mayonnaise that makes you get addicted to it.
Kewpie mayonnaise is used worldwide nowadays, even at posh restaurants. At regular sushi restaurants, or at sushi train shops, Kewpie mayonnaise is heavily used, although I never even attempt to eat it because it is not real sushi according to my dictionary.
Kewpie mayonnaise was actually created based on the US mayonnaise. The founder of Kewpie Corporation tasted mayonnaise in 1920 when he was in the US and decided to market it in Japan. The first Kewpie mayonnaise was on the market in 1925. The brand name came from the US doll “kewpie”. I am not sure why the founder chose this doll as the brand name. All I know is that kewpie dolls were very popular among the girls when I was little and I certainly had a kewpie doll.
I hardly use mayonnaise in my dishes but I like Kewpie mayonnaise better than Western style mayonnaise. I find that the Western style mayonnaise has stronger acidity and is sometimes oilier. But it is just me who has strong Japanese taste buds.
In addition to Kewpie mayonnaise, vinegar could be added to the potato salad to give a bit of acidity and moisture. But I only use mayonnaise with Dijon mustard, salt and pepper. Dijon mustard is a new addition to this recipe as I hardly used Dijon mustard when I was in Japan but I think it works very well.
When I posted Okonomiyaki (Japanese Savoury Pancake), I touched on Kewpie mayonnaise as the recipe included mayonnaise. If you have already made okonomiyaki, you might still have Kewpie mayonnaise left over. Why don’t you make potato salad with the remaining mayonnaise?
Yumiko
- 800g (1.8lb) starchy potatoes (note 1)
- 90g (3.2oz) cucumber
- 90g (3.2oz) onion
- 90g (3.2oz) carrot
- 50g (1.8oz) thinly sliced ham (note 2)
- 2 boiled eggs
- 6 tbsp Kewpie mayonnaise
- 2 tsp Dijon mustard
- Pepper (white pepper preferred)
- Salt
- Green leaf lettuce leaves
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Put potatoes in a saucepan and add water to cover the potatoes sufficiently. Turn the heat on high and bring to a simmer.
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Cook potatoes until a bamboo skewer or a thin knife can get through to the centre of the potatoes easily. This will take 15-40 minutes depending on the size of the potatoes (note 3).
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Slice cucumber thinly into 2mm (1/16”) slices (note 4). Sprinkle with a pinch of salt over the cucumber slices and leave them for 10 minutes. The cucumber should become wet and soft. Rinse and squeeze out excess water.
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Cut the onion in half crosswise, then slice as thinly as possible lengthwise. Sprinkle a pinch of salt over the onion slices and leave them for 10 minutes. Rinse and squeeze out excess water.
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Cut the carrot into quarters lengthwise (note 5), then slice 2mm (1/16”) thick perpendicular to the initial cut. Boil the carrot slices in a small saucepan for few minutes until tender. Drain.
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Cut sliced ham into about 3cm x 5mm (1⅛” x ⅜”) pieces.
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Dice boiled eggs into 5mm (3/8”) cubes (note 6).
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When the potatoes are cooked, drain into a colander. Peel the potatoes immediately and place them into the saucepan just emptied. It is very hot so use a cloth or layers of kitchen paper to hold the potatoes.
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Using a potato masher, mash the potatoes half way leaving some chunks of potatoes. Then cool down to at least close to room temperature.
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Add cucumber, onion, carrot, mayonnaise, mustard, freshly ground pepper (few twists) and a couple of pinches of salt to the potato. Using a round wooden spoon, mix well.
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Reserve a tablespoon of cubed boiled egg for decoration, add the rest of the boiled egg to the potato and gently mix.
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Place a mound of potato salad on a serving plate or in a bowl with green leaf lettuce on the side. Sprinkle the remaining boiled egg over the potato salad.
1. Starchy potatoes are best suited to this dish as they become nice and fluffy when cooked. The best to use are Russet (common in the US), Dutch Creams, King Edward or Red Delight. However, great all-purpose potatoes like Golden Delight, Coliban, Red Rascal and Sebago (popular in Australia) still work great.
2. Ham can have different names depending on the country. As long as the ham does not require cooking, is not smoked, not like salami and not sweet, then you can use any kind of ham.
3. If you are running out of time and have large potatoes, then you could peel and cut the potatoes into quarters or 6 pieces to boil. This should reduce the boiling time significantly.
In this case, I would strongly recommend that you dry the boiled potatoes to remove excess moisture by placing the drained potatoes back in the saucepan over high heat and shaking the pan for 15 -20 seconds. The moisture should evaporate and the corners of the potatoes will start breaking and become mushy. Be careful not to burn the potatoes.
4. I used Lebanese cucumber the diameter of which is about 3cm (1⅛”). If your cucumber is a thick large one, I would suggest that you cut it in half or quarters lengthwise, then slice it.
5. My carrot was about 4cm (1 ½”) in diameter. If the carrot is very thin, you can just halve it lengthwise. If very large, you may have to cut it into 6 pieces lengthwise.
6. If you have an egg slicer, you can dice them easily. Place the egg long ways (this is not the standard egg slicer is designed to place the egg) and slice. Holding the egg together, turn the egg 90 degrees (the egg is still placed long ways). Sice again. Then rotate the egg 90 degrees sideways and slice.
If you don’t have a slicer, you could use a knife to chop them but the egg yolk tends to stick to the side of the knife. You can use a thread to at least slice them neatly if you want. Simply place a thread around the egg leaving the ends of the thread crossed ove each other. Then pull the both ends of the thread outward. It will make the circle of the thread placed around the egg smaller, cutting through the egg. Once the egg is sliced, then knife can be used to dice them.
I loved this was different and soooo nice thankyou again nagi oops yumiko ha ha
Hi Betty, glad you liked it!
Hello yumiko, again me!
In this post you mention that the professional method of cooking potatoes is cooking them whole and peeling them when they are still hot, so I ask myself, does this also apply to cooking Japanese sweet potatoes? (I plan to make sweet potato pie)
Hi Ruth, welcome back! If you want to have a fluffy texture of the sweet potato, then cooking whole would be better, I think.
Hello yumiko, today I did takoyaki and I had the opportunity to taste the Japanese mayonnaise Kewpie, although at the beginning it was a little weird, in the end, my mom ended up liking us !!! I plan to make this salad in a few days, however I have some questions about mayonnaise: you have to regrive it and it is true that it should be consumed in a month or less? Finally, since the mayonnaise that I bought is 500 gr, I would like to know more ways to use it, that is, how is it normally used?
Hi Ruth, I love takoyaki!
With regard to how soon you need to consume Kewpie mayonnaise, it depends on how you feel. Kewpie indicates that the product will not lose the original flavour and taste for 1 month after which they will not be able to guarantee how long the mayonnaise will be the same as the unopened state. However, it does not mean that you cannot eat it after 1 month. some people use it after 3-6 months or even longer. I certainly use it for longer than 6 months.
Many Japanese people add Kewpie mayonnaise to salad or shredded cabbage instead of salad dressing. If you find that the mayonnaise is too thick on salad, you could add lemon juice/oil etc to make it runny.
You can also add mayonnaise on toast and grill it, instead of cheese (totally different flavour but yummy). You may want to add ham/egg on it, too.
I posted Okonomiyaki recipe which uses mayonnaise as a topping.
If you mix mustard or wasabi with mayonnaise, you will get different flavours of mayonnaise in which you can toss fresh vegetables. You can also make dip using mayonnaise.
Thanks for your answer yumiko. By the way, I hope that someday of these you publish a takoyaki recipe, I really want to know how is your way of doing them.
Finally, is it necessary to store the mayonnaise in the fridge? Or in a dark and cool place? The chicken karaage can be accompanied with mayonnaise, is this done in Japan?
Hi Ruth, one day I will post takoyaki. Kewpie mayonnaise needs to be in the fridge.
A lot of people in Japan do not eat karaage with mayonnaise. Majority say that they eat it either by itself or with lemon. However, when it comes to sauce to go with karaage, mayonnaise is the top of the rank.
Hello yumiko, thanks for your advice, today I made the Japanese potato salad and by the way it was very good! Ami mom loved it, I feel like she is not a big fan of mayonnaise. It was also a little complicated to peel the potatoes while still hot but the texture was spongy and not watered down. I thought about adding vinegar, but I did not know whether to use white vinegar or rice vinegar?
Hi Ruth, that’s really great! Vinegar can be a standard white wine vinegar, apple cider vinegar or Japanese rice wine vinegar.
Also, this salad that is usually accompanied? When I was preparing it, I realized that I did not know with which dish to accompany it
You can assume this salad just like any other potato salad. Meat based dishes would probably go very well with this, particularly BBQ, Steaks, Sautéed meat. But I even serve this potato salad with grilled fish.
Hi yumiko , i hate mayo! , what could i use instead?
Hi Chong, the flavour will be different but I would suggest that you use 6 tbsp plain/Greek yoghurt + 1 tbsp oil + 1/2 tsp sugar + 1/2 tsp salt + some pepper. You might need to adjust seasoning to your taste.
Thank you, Yumiko, for another adventure in Japanese cuisine. It is so enchanting to savour dishes we are not familiar with. Kewpie mayo is available here and I bought some but found I really didn’t know how or when to use it…it went past its best before date and had to be tossed. With this new potato salad recipe I will get some more (or even try to concoct my own in smaller batches …thanks, Richard).
One question: is the cucumber pickled? Also, the little pile of white onion reminded me of shredded daikon…a thought for adding “crunch”?
Hi Vivan, cucumbers are fresh cucumbers, not pickled. By sweating the slices with salt, they become soft like pickled cucumbers.
I am not sure if daikon and boiled potatoes go well in this but you can try and add them to see how it turns out. Replacing sliced onions with shredded daikon will change the flavour of the potato salad.
This taste just like the potato salad we use to eat while stationed in Okinawa Japan for six years at a restaurant called Kinas kitchen. Now if I only find the recipe for their macaroni salad.
Hooray for Japanese Potato Salad! This is a staple at my house – i have a half-Japanese spouse. We cube the potatoes, dice the carrot and onion and boil it all together until fork tender. Then, drain and give the hot mixture a quick shake or two of rice wine vinegar. After that cools, the Kewpie and karashi mustard are added. (The cukes are served on the side because i don’t like them.) By the way, only Kewpie mayo makes it into our house-i have ordered it from Amazon for some time.
Hi Diana! Good on you that you even order from Amazon to stock just Kewpie. It is quite different from the Western style mayonnaise, isn’t it?
I found a recipe for the Kewpie Mayonnaise. Is it okay to post it here? http://www.food.com/recipe/kewpie-onnaise-384110
About This Recipe
“I love Kewpie mayonnaise, but can’t find it in my hometown. I’ve tried my best to duplicate it, and this is what I’ve come up with.”
Ingredients
2 egg yolks, at room temperature
1 1/4 cups canola oil
1 teaspoon salt
1/2 teaspoon sugar
2 -3 tablespoons seasoned rice vinegar
Correction
use two egg yolks instead of one egg
Directions
Crack egg into the bowl of a food processor.
Add salt and sugar, and process until well combined.
With the motor running, add the oil in a slow, steady stream until all is incorporated.
With the machine running, add the rice vinegar.
Cover, and refrigerate for at least an hour, before ready to use.
Hi Richard, in replying to Vivien’s comment, I just noticed that I did not reply to you. Long over due, sorry. I might try this and compare with the store-bought.
Konnichiwas Yumiko-san! I am a big fan of good potato salad and this sounds very good with the vegetables and ham! I have not seen Kewpie mayonnaise here so I would have to use another brand. I like the addidtion of Dijon mustard for that little tang I had to smile when I read that this is often served for breakfast because whenever I make potato salad I always eat it in the morning!
Hi Dorothy-san.It is unfortunate that Kewpie is not available. But half-mashed potatoes with colourful veggies and ham would make it just like a Japanese potato salad.
First, let me say that I am not a potato salad fan. Your beautiful dish is not a potato salad. It is a work of art. It is so visually appealing that I’d want to sample it and finish what’s on the dish. I love the addition of the colorful vegetables! This is certainly an inspiring recipe. Thank you!
Hi Marisa. It is colourful, isn’t it? I can eat them all by myself, too.