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What Can I Eat at a Japanese Restaurant on Keto?

4 min read

According to a 2025 survey by Savvy Tokyo, enjoying Japanese food while adhering to a keto diet is not only possible but can be delicious and satisfying. Whether you're heading to a sushi bar or a teppanyaki grill, you can find numerous low-carb options if you know what to look for, so here's what can I eat at a Japanese restaurant on keto.

Quick Summary

This guide provides a comprehensive list of keto-friendly options at a Japanese restaurant, including sashimi, yakitori, and teppanyaki. It also details high-carb dishes to avoid, offers tips for ordering, and suggests easy modifications for a delicious, low-carb experience.

Key Points

  • Prioritize Sashimi and Grilled Proteins: Opt for thinly sliced raw fish (sashimi) or plain grilled meats like yakitori (with salt) and yakiniku to avoid carbs.

  • Avoid Rice, Noodles, and Tempura: Traditional sushi rolls, ramen, udon, and deep-fried tempura are high in carbs and should be avoided.

  • Request Sauce on the Side: Many Japanese sauces like teriyaki and eel sauce are loaded with sugar. Order sauces on the side or use low-carb alternatives like tamari.

  • Embrace Appetizers Like Miso and Edamame: Classic starters like miso soup and salted edamame are excellent low-carb options to begin your meal.

  • Ask for "Skinny Rolls": For a sushi experience without the rice, inquire about rolls wrapped in cucumber or soy paper.

  • Watch for Hidden Carbs: Be cautious of imitation crab, sweet dressings on salads, and sugary marinades used in some dishes.

  • Customize Your Meal at Teppanyaki: At a hibachi grill, request plain grilled proteins and extra low-carb vegetables, skipping the fried rice.

  • Bring Your Own Condiments: Consider carrying a small bottle of coconut aminos or tamari if you want to be extra careful about your soy sauce.

In This Article

Navigating a Japanese menu can seem daunting when following a ketogenic diet, which restricts carbohydrates. However, Japanese cuisine is built around fresh ingredients, including a wide variety of fish and vegetables, making it highly adaptable. By focusing on protein-rich dishes and avoiding high-carb staples like rice, noodles, and sugary sauces, you can enjoy a delicious meal out without derailing your diet.

Keto-Friendly Japanese Appetizers

Start your meal on the right track with these low-carb appetizer options:

  • Miso Soup: This classic soup, made from fermented soybean paste, seaweed, and tofu, is a fantastic low-carb starter. Be aware that some versions might contain hidden carbs, so it's always best to ask your server if possible.
  • Edamame: Steamed and salted soybeans are a simple yet satisfying choice. They are relatively low in net carbs and high in protein, making them a perfect keto appetizer.
  • Sashimi: As thinly sliced raw fish or meat served without rice, sashimi is the ultimate keto option at a Japanese restaurant. Choose from high-quality options like salmon (sake), tuna (maguro), or yellowtail (hamachi).
  • Seaweed Salad: A simple seaweed salad can be a great option, but be cautious. Many restaurants use a dressing with added sugar. Ask for the dressing on the side or just a simple vinegar and oil dressing if available.

Main Course Options: Protein is King

When it comes to main courses, focus on grilled and fresh proteins while skipping the rice bowl.

  • Yakitori: These delicious grilled chicken skewers are a fantastic, high-protein choice. To ensure they are keto-friendly, order them "shio" (with salt) instead of "tare" (the sweet soy basting sauce).
  • Yakiniku: Japanese barbecue, where you grill your own meat and vegetables at the table, is an excellent customizable meal for keto dieters. Stick to plain meat and veggies and use simple soy sauce for dipping instead of sugary marinades.
  • Shabu-Shabu or Sukiyaki: These hot pot dishes involve cooking thinly sliced meat and vegetables in a savory broth. Avoid dipping sauces that contain sugar and don't consume the broth if it is sweetened.
  • Hibachi-Grilled Meats and Vegetables: When dining at a teppanyaki restaurant, you can enjoy plain grilled meats like steak or chicken seasoned with just garlic, butter, and soy sauce. Request that your chef skips the rice and opt for extra low-carb vegetables like zucchini, mushrooms, and broccoli.
  • Chirashi Bowl (No Rice): Ask your server for a chirashi bowl without the rice. You'll get a beautiful bowl of assorted fresh fish, perfect for a high-protein, low-carb meal.

Comparison Table: Keto-Friendly vs. Non-Keto Japanese Dishes

Keto-Friendly Options High-Carb Dishes to Avoid
Sashimi (raw fish without rice) Sushi Rolls (traditional with rice)
Yakitori (grilled chicken skewers with salt) Teriyaki (sauce is typically very sugary)
Edamame (salted soybeans) Tempura (fried, breaded food)
Shabu-Shabu (hot pot with meats and vegetables) Ramen (noodles are high-carb)
Miso Soup (ask about ingredients) Donburi (rice bowls with toppings)
Yakiniku (grilled meat and vegetables) Udon/Soba Noodles (all noodle dishes)

How to Handle Sushi Rolls on Keto

Since traditional sushi rice is a no-go on keto, here are a few workarounds for your sushi cravings:

  1. "Skinny Rolls" or Cucumber Wraps: Many sushi restaurants offer rolls wrapped in thinly sliced cucumber or soy paper instead of rice. These are often called "naruto" or "skinny" rolls. They are a delicious and creative way to enjoy the classic sushi flavors without the carbs.
  2. Order a Roll with No Rice: It's worth asking if they can prepare your favorite roll with just the fillings and no rice. Fillings like crab, avocado, and fish can be rolled in nori seaweed.
  3. Be Careful with Imitation Crab: Many restaurants use imitation crab, which can be high in carbs due to sugar and fillers. Always ask for real crab meat instead to keep it keto.

Sauce and Condiment Cautions

Even with keto-friendly dishes, hidden sugars can lurk in sauces. Be mindful of these details:

  • Soy Sauce: While regular soy sauce has a small number of carbs, it can add up. Opt for a low-sodium or gluten-free soy sauce (tamari), or carry your own coconut aminos to be safe.
  • Teriyaki Sauce: Avoid teriyaki entirely, as it is notoriously high in sugar.
  • Eel Sauce and Other Glazes: These sauces are almost always sugar-laden. It's best to skip them completely.
  • Spicy Mayo: Some spicy mayo is fine, but many restaurant versions are made with sugar. Ask if it is pre-made or if they can mix a simple mayo and sriracha for you.
  • Ginger and Wasabi: These are generally low-carb. Just be aware of portion sizes, particularly with pickled ginger, which can sometimes have added sugar.

Conclusion

Eating a Japanese meal on a keto diet is not an exercise in deprivation but a chance to enjoy the clean, fresh flavors of the cuisine's core ingredients. By focusing on protein-rich options like sashimi, yakitori, and grilled meats, while making mindful choices about sauces and avoiding rice and noodles, you can have a truly satisfying and diet-friendly dining experience. Don't be afraid to ask for customizations; most restaurants are happy to accommodate dietary needs. Remember to prioritize high-quality fresh fish and grilled proteins to make the most of your meal while staying in ketosis. Just a few simple swaps can turn a potentially high-carb meal into a perfectly balanced, low-carb feast.

Frequently Asked Questions

No, traditional sushi with rice is not keto-friendly due to the high carbohydrate content of the seasoned rice. However, you can eat sashimi (raw fish without rice) or ask for rolls wrapped in cucumber or soy paper instead.

Yes, standard miso soup is generally low-carb and keto-friendly. It is made from fermented soybean paste, seaweed, and tofu. Just be aware that some restaurants might add other ingredients, so it's always good to ask.

The best keto-friendly option is sashimi, which is just raw fish without any rice. For something closer to a roll, ask for a "naruto" or "skinny" roll, which is wrapped in cucumber.

No, you should avoid teriyaki sauce. It is almost always made with a significant amount of sugar and is not suitable for a keto diet.

Yes, edamame are a great keto-friendly appetizer. These steamed, salted soybeans are low in net carbs and high in protein, offering a satisfying start to your meal.

Traditional tempura is not keto-friendly. The batter is made from wheat flour and is high in carbs. It is best to avoid any fried or breaded items.

No, imitation crab (often called 'krab') contains sugar and fillers that are high in carbohydrates and should be avoided. Always ask for real crab meat if you are ordering a roll with crab.

References

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Medical Disclaimer

This content is for informational purposes only and should not replace professional medical advice.