FAQ’s

Always add the packet before heating. Bring the water to a boil, then simmer gently to bring out the full umami.

Yes! The powder can be sprinkled directly into soups, stir-fries, or marinades for an instant boost of umami.

To avoid clumping, try adding the powder before heating. If sprinkling over hot food, reduce steam exposure or transfer the powder to a small plate before using.

Keep the packets in their original aluminum bag. Gently press out the air, seal tightly, and store at room temperature away from humidity and direct sunlight.

We don’t recommend it. Refrigeration may cause the packets to absorb moisture or unwanted odors.

It’s best to keep the powder in its original packet. Fold the edge tightly, place it in an airtight container with a desiccant if available, and use it as soon as possible.

All of our products are made in carefully monitored facilities in Japan without preservatives. As a result, the “best before” date may be shorter than similar products found in U.S. markets.

Please note that we cannot accept returns or exchanges for items that are close to their best before date.

For details on each product’s return eligibility period, please refer to the product page. Thank you for your understanding.

We occasionally update our packaging without prior notice to reflect improvements or seasonal designs. The contents and quality remain the same, but the design may differ slightly from what is shown on the website.

Yes. All Kayanoya products, including Kayanoya Dashi, are made without the use of genetically modified ingredients. This standard applies not only to the main ingredients but also to secondary and tertiary ingredients.

Our Light in Sodium Dashi is made with a higher proportion of natural dashi ingredients, which results in slightly higher naturally occurring sodium. However, no additional salt is added.

We recommend Light in Sodium Dashi for those who are mindful of reducing their salt intake.

One packet of Kayanoya Original Dashi contains approximately 180 µg of iodine.

It is an ingredient that provides umami.
Fermented seasoning is produced by fermenting soybeans and wheat to develop a rich flavor.

Yeast extract is considered a food ingredient, not an artificial food additive in Japan.
Yeast has long been indispensable for brewing beer and wine, fermenting bread, and producing fermented foods such as miso and soy sauce.

At Kayanoya, we use yeast extract made from these safe and reliable yeasts, in order to enhance the natural flavor of the main ingredients.

We currently ship to all 50 U.S. states, including Alaska and Hawaii, as well as Guam.

As of November 12, 2025, the following flat-rate shipping fees apply to all orders within the United States, regardless of order size:

• Mainland U.S.: $7.95
• Alaska: $9.00
• Hawaii: $14.30
• Guam: $15.00

Due to rising shipping costs nationwide, we sincerely appreciate your understanding and continued support.

Yes. We offer complimentary shipping on your first order when you create a customer account.

• Create your account via Create Account Page.
• Log in and enter the promo code KAYA172 at checkout
• Valid only on your first order after account creation
• Previous customers who create an account for the first time may also use this code

Please note: The promo code must be entered while logged into your account. It cannot be applied retroactively or to future orders.

Once your order ships, you can view tracking information by logging into “My Account.”

Please confirm your shipping address carefully when placing your order, as we are unable to reship items that are returned due to incorrect address entry.

We accept the following payment methods:

• Credit cards (American Express, VISA, MasterCard, Discover, and more)
• PayPal
• Shop Pay
• Amazon Pay

Amazon Pay is available only for accounts at Amazon.com (U.S.). It cannot be used with accounts from Amazon.co.jp.

If you have accounts on both Amazon.com and Amazon.co.jp with the same email and password, please change one before using Amazon Pay.

Your card will be authorized at the time of your order. The final charge will be processed when your order is ready to ship.

Our rewards program is our way of thanking you for being part of our community.

You can earn points through everyday activities—like shopping, writing a review, or referring a friend—and redeem them for discounts on future orders.

It’s easy and free! Simply create an account on our website and you’ll be automatically enrolled in the program.

If you already have an account, you're already earning points.

You can earn points in several ways, including:

• Making a purchase
• Celebrating your birthday (if entered in your profile)
• Referring a friend
• Write a review

Visit the Kayanoya Rewards Program Page to view all available ways to earn points.

Log in to your account and visit the Rewards section to see your current points and available rewards.

There are two easy ways to redeem your points: from the Available Rewards on the Reward Program page, or through your point balance shown under ‘Your Account’ at the top right of the page.

Please note: Only one reward can be applied per order.

Yes, points expire after a period of inactivity.

To keep your account active, simply earn or redeem points during that time.

In most cases, only one discount or promotion can be applied per order.

However, some seasonal promotions may allow for stacking—please check the details when a campaign is live.

Yes, we offer a range of gift boxes that are perfect for client appreciation, employee recognition, and holiday gifting. Let us help you share the gift of authentic Japanese flavor.

Yes. We offer a 10% discount on corporate gift orders of $1,000 or more. Please contact Customer Support to get started.

Yes. We can ship to multiple addresses for orders over $1,000. Please prepare your recipient list in advance and contact Customer Support for assistance.

We kindly ask that you place your order at least 10 business days in advance to ensure on-time delivery. We don’t want to be late for your important event!

Please reach out to our Customer Support team or complete our Corporate Gift Inquiry Form, and we’ll be happy to assist you in creating a thoughtful and well-prepared gift experience.