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Guide to Living Keto in Japan

By Ross McFarlane
November 21, 2019
Updated: October 5, 2020
We strive to be as accurate as possible and keep up with the changing landscape of Japan’s food and travel industries. If you spot any inaccuracies, please send a report.

Living Keto in Japan:

A comprehensive guide to maintaining a ketogenic/low carb diet in Japan.

For the veteran residents, the challenges of maintaining any form of low carb diet in Japan are very real. Japan is a country with an undying affinity to rice and noodles, and the concept of a low-carb diet has yet to see the boom it has had in Western countries such as the US and the UK. However, fear not as in this post I will share with you all the ways you could stay true to your ketogenic diet and help you discover low carb foods and keto-friendly Japanese foods.

One would be forgiven for thinking that you will lose weight in Japan just by merit of the smaller portion sizes and the general sense of health consciousness here in Japan, but rest assured, you will have a nasty shock if you don’t keep an eye on what you’re eating. Japan is one of the world’s finest in hidden sugars, a hard-learned lesson I found out about on my first health check two years ago where I had found myself at a very uncomfortable size. That was when I shifted gears and took a dive into ways I could fit reshaping my diet and lifestyle in spite of my strict time constraints with work.

Paper reading "Ketogenic Diet" with a pie chart of fats, carbs, and protein, next to salmon, nuts, avocado

What is the Keto Diet?

For those new to the keto diet, it is a very low carb, high fat diet which has been proven to have many health benefits including; weight loss, reduced risk of heart disease, reduced risk of Alzheimer’s, amongst numerous other benefits it can offer. There are several studies (here are just a few… 1, 2, 3) that back up the positive effects of going keto.

The general structure of this diet is to keep your daily net carbs under 20-50g a day for your body to go into ketosis, a state in which the body takes energy directly from the body fat stores.

Keto-Friendly Food Examples:

Chicken

Cheese

Avocado

Pork

Eggs

Beef Jerky

Coffee

Fish

Carbicidal Food Examples

Bread

Flour Noodles

Rice

Sugar

Fruits                                         

Other Starchy Foods

Dining Out on the Keto Diet in Japan

Back to being keto in Japan, as previously mentioned, it is relatively hard given the abundance of rice in the Japanese diet, however by no means impossible. There are a variety of keto-friendly options in Japan that you can take advantage of whilst taking a trip to Japan. If you are going to go out, you can find a variety of low carb options on the おつまみ (otsumami, appetizer) or 単品 (tanpin, single item menu). A prime example of how you can eat out on a low carb diet on this method would be the yakiniku plate in the single plate menu at Matsuya.

Matsuya beef bowl with nutritional info

The 炭水化物 (carbs) for the 単品 (single dish) is at 2.1g which makes for a very keto-friendly option for those who want to eat out.

Japanese Phrases to Know

Excuse this interlude, I have written out some handy phrases you may use to help maintain your low carb diet in Japan. For more handy Japanese phrases, read Basic Japanese Phrases for Dining Out.

  • Net carbs - 炭水化物 (tansuikabutsu)
  • Single dish - 単品 (tanpin)
  • Appetizer - おつまみ (otsumami)
  • Do you have anything that doesn’t have carbs?

炭水化物が入っていないものはありますでしょうか? (Tansuikabutsu ga haitteinai mono wa arimasu deshou ka?) 

  • I’m on a Ketogenic diet (literally no-carb diet).

炭水化物抜きダイエットをしています(Tansuikabutsu nuki daietto wo shiteimasu.)

  • No rice, please. / Without rice, please.

ご飯はなしでお願いします。(Gohan wa nashi de onegaishimasu.)

The izakaya barkeeper chats with a customer, over a table laden with grilled meat skewers

Keto-Friendly Japanese Dishes

Now for the pièce de résistance! Take a gander at the list I have compiled for your reading pleasure. An eclectic mix of the best in low-carb, ketogenic chow you can sink your teeth into whilst here in Japan.

1. SHABU-SHABU

Starting strong with this magic broth. Shabu-shabu (literally “slurp slurp” in Japanese) is a low calorie, high taste member of the low-carb Japanese cuisine family. Accompanied with a few small bowls filled with goma sauce (ごま, sesame) and ponzu (ポン酢, orange citrus soy sauce), you boil meat and vegetables in a large soup broth on a hotplate in the middle of the table. Most shabu-shabu restaurants offer a variety of cuts of meat however I would recommend the "bara" cut of meat as it is a bit leaner than the harumi or galbi options.

2. YAKINIKU

The Japanese indoor BBQ provides you with as much chicken, pork, and beef as your heart desires. To keep true to your ketogenic diet, I would suggest going for the salt/plain options as there is a lot of sugar in the sauces used in the ajitsuki (味つき, flavored) types. 

3. YAKITORI

 A Japanese shish kebab, yakitori is a very good high protein, low carb addition to your diet. Look for the salt option (shio, しお) as this would be a better alternative to the tare (タレ) option as they contain a lot of sugar.

4. SASHIMI

Sashimi, raw fish cut into thin slices, is a great keto option worth trying with wasabi and soy sauce for a great, healthy bite to eat.

5. ODEN

Oden is a myriad of boiled ingredients served usually in the wintertime. Although not strictly a carb-free choice in itself, there are some great keto-friendly Japanese food options.

6. HAMBURG

It’s a burger patty without the buns. Less is more, as they say… if you ask for the lettuce bun at Mos Burger, you’ll find that your dining out options are expanded, only if by just a little!

7. CHICKEN STEAK

Most commonly found in the all-mighty Family Mart, better known to the locals as “Famima,” this is, at its essence, a fried breast of chicken with no bread crumbs, making it a strong contender for a quick rush-hour breakfast or guilt-free snack. At only 6.7g digestible carbs, this is a staple food for those going low-carb in Japan. Check out this Reddit thread for the latest on this product, and the Family Mart website for the hot tray product info.

8. MISO SOUP

Often served as a component of teishoku set meals, you can rest assured that miso soup is a keto-friendly dish. Made with fermented soybean paste and often including cubes of tofu, miso soup is a protein-packed option that complements any Japanese meal.

9. EDAMAME

Edamame are vibrantly green, young soybeans that often come served in the pod at izakaya gastropubs across Japan. They can also be purchased in the freezer section of Japanese grocery stores, and are a great snack to have on hand. Just boil them and sprinkle on some salt for a quick and simple dish you can graze on between meals.

A woman holds out a piece of grilled meat, freshly cooked and steaming, between her chopsticks

HONORABLE MENTIONS:

As they are not strictly Japanese foods, rather foods that have taken off here in Japan, I didn’t want to put them in the list but feel they’re just too good not to mention.

Chinese Lamb BBQ - Found predominantly in areas such as Shinjuku and Ikebukuro, this is quite a refreshing change to the everyday keto foods available in Japan. Usually made with a mix of spices and chili oils, it is certainly one which would entice individuals that enjoy their food with a burn.

Samgyeopsal - Korean pork belly BBQ, to be wrapped in lettuce or sesame leaves and eaten with an array of pickled side dishes and condiments.

Otsumami Kebab - Most kebab stands in Japan will have the option of giving you kebab meat on a bed of salad. Depending on the shop, this can do from mediocre to sublime. As long as you read up on the sauces (or bring your own), this is a great addition to your low-carb diet.

Bulletproof Coffee - The infamous bulletproof coffee is a must for people on a low-carb diet. Bulletproof coffee is a mixture of butter and MCT oil which is said to convert to ketones in the liver giving you long-lasting energy. Family Mart has had their own butter coffee for about a year, not for those not wanting to buy a whole stick of butter!

Grocery Shopping & Cooking When You’re Keto in Japan

A man and a woman pass by a grocery store in Japan

Reading Nutrition Labels

As you can see above, working out Japanese nutritional labels is no picnic in the park.

炭水化物 (carbohydrates) and 糖質 (carbs from sugar) are the words you have to look out for as if either of these go over 50g over the span of a day, you are not having a very successful keto day.

  • Calories - エネルギー/熱量 (Enerugi / Netsuryou)
  • Protein - たんぱく質 (Tanpakushitsu)
  • Fat - 脂質 (Shishitsu)
  • Carbohydrates - 炭水化物 (Tansuikabutsu)
  • Sodium - ナトリウム (Natoriumu)
  • Carbohydrates from sugar - 糖質 (Toshitsu)
  • Dietary fiber - 食物繊維 (Shokumotsu sen-i)
  • Calcium - カルシウム (Karushium)
  • Sodium chloride - 食塩相当量 (Shokuen soto ryo)
Japanese nutrition label with ingredients and amounts listed

Keto-Friendly Carb Substitutes

Cauliflower Rice

Usually found in the frozen aisle, is does exactly what it says on the tin. A very delicious keto alternative to rice which also goes very well with cheese. The famous curry chain, “Coco Ichibanya” also known as “Coco Curry” has also started serving this product for its health-conscious customers. Cauliflower rice is sold in most large supermarket chains, but if you’re struggling to find it, you can get your supply from Rakuten!

Miracle Noodles (Shirataki Noodles)

Miracle noodles are a kind of low carb noodle alternative you can have in Japan. Made from the konnyaku potato and oxide calcium, it is a venerated low-carb noodle alternative in Japan and indeed, in different forms across the Far East. The miracle comes from the fact it contains nigh-on zero calories alongside being fat-free, gluten-free, protein-free, and sugar-free. It gets its unusual superpowers from its rather high abundance of fiber which the body finds difficult to effectively digest. These products are usually sold in a sachet full of water in the chilled section of supermarkets. On a side note, be sure not to mistake konnyaku noodles with its rather similar looking cousin 春雨 (harusame), glass noodles, which are significantly higher in carbs.

Jelly-like white noodles in a bowl next to wooden chopsticks

A Few Last Tips to Maintaining Ketosis in Japan

  • Snack on chicken salads from any convenience store.
  • Always check the labels of coffee from convenience stores and supermarkets as espressos and black coffees in Japan can contain sugar. 
  • Drink large amounts of green tea. It is inexpensive and curbs hunger. Not eating carbs can be very dehydrating and it is important to keep your liquids up for a healthy mind and metabolism. 
  • When at an izakaya, you can order edamame (green soybeans) and kyabetsu (cabbage) to quell hunger before the main courses to keep you full and true to your diet. Drinking isn't recommended on any diet but Japanese “highballs" (a mix of whisky and unsweetened carbonated soda) would be the lesser of two evils!
A spread of tomatoes on the vine, hard-boiled egg, and sliced avocados on a white plate

That’s about it when it comes to maintaining a ketogenic diet in Japan. I hope you learned something! Although not a country which particularly caters to various types of specialized diets (especially that of the low-carb varieties), there are still some solid methods of keeping yourself on track and enjoying yourself in Japan.

To summarize, it is more difficult to be keto in Japan than in other countries, but by no means impossible, take advantage of low-carb hacks such as the 単品 (tanpin) and おつまみ (otsumami) menu to stay away from large volumes of carbohydrates and stay wary of the 炭水化物 carbohydrate value on the labels of products. 

Keeping up with the Reddit group, “rketoJapan” will also give you ongoing insight into the newest products and the up-to-date info on everything that is keto in Japan and I fully recommend it to people who are interested in getting creative with new ideas on how to stay keto in Japan. “Happyketo” is also a great resource for keto and gives you recipes using ingredients you can find in Japanese supermarkets.

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Ross McFarlane
Hello Readers, my name is Ross, I have been a resident of Kanto for 3 years living in all 4 prefectures; Tokyo, Chiba, Kanagawa and Saitama. Through these experiences, I have accumulated a myriad of delectable eateries and venues which I am very excited to share with you.
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