General FAQs

What is Miso?

Miso (みそor 味噌) is fermented soybean paste. It is made by fermenting soybeans or other beans with salt and kōji (the fungus Aspergillus oryzae) and sometimes rice, barley and other ingredients. 

The fermentation process can range from 6 months to 3 years, sometimes even more. The result of this process is a thick paste used for a variety of purposes such as sauces and marinades, pickling of vegetables, fish, or meats, and adding flavor to soups. You can add miso to ANYTHING! Japan's culinary staple of misoshiru (みそしる or 味噌汁), mixes a basic soup stock, dashi (だし or 出汁) with miso paste. 

Miso is the crown jewel of Japanese cuisine. It is the primary source of complexity in many of the soups and dishes of Japan.

What are the benefits of miso?

Did we mention that miso is ~fermented~???? As a fermented food, miso provides the gut with lots of beneficial bacteria that helps you stay healthy and happy. A healthy gut microbiome is known to be linked to our overall mental and physical wellness, and who doesn't want that :') Co-founder Shoichi Sugiyama stresses that eating gut-loving, fermented foods like miso, nattōamasake, and kimchi, is the key to living a healthier and happier life.

Miso's also got protein, wooohoo! It's also rich in vitamins and essential minerals like vitamin E, vitamin B, vitamin K, and folic acid.

Have some questions about soy and cancer? Please read this piece by American Institute for Cancer Research debunking a common myth around soy.

How long is Yoka Miso aged for?

Yoka Miso is aged for a minimum of 7-12 months. Our Aka Miso is aged for 24 months.

How long is Yoka Miso good for?

Yoka Miso is good for 6-12 months in your fridge. Fermentation of the miso will stop when refrigerated making it last months :)

How do I store Yoka Miso?

The best way to store our miso is to take it out of the bag, unwrap it from the parchment paper, transfer it to a reusable container, and pop it in the fridge. Remember to compost our packaging once you've transferred the miso.

Is Yoka Miso gluten-free?

Yoka Miso is GLUTEN-FREE!


I accidentally entered the wrong shipping address when I checked out. Can I change the address?

Absolutely! Please email us immediately so we can update your information. If your item(s) have already shipped, unfortunately, there is nothing we can do about the package being shipped to the wrong address and we cannot offer a refund or reshipment.

What is your turn-around time after I've placed my order?

An order is packed and shipped within 7 days after an order is placed. Wish it was faster, but remember, we're a very small business :)

What do I do if my item(s) arrive damaged?

We pack all of our orders with extra love and care, but sometimes our miso bags tend to get damaged in transit. Please email us within 48 hours of your package being delivered with a photo of the damaged item in the original packaging and a photo of the shipping container. In order to get a refund or replacement, you must email us multiple photos within 48 hours of your package being delivered to

How will my order be shipped?

We ship 100% plastic-free. We use 100% compostable packaging down to our labels. Everything is certified backyard compostable, so go ahead, try it out and toss it in your yard waste or backyard compost! We encourage you to recycle, compost, or reuse any/all items in your shipment.

My package was lost or stolen! What should I do?

Ooof! It's such a bummer when this happens :( Unfortunately, we are not responsible for any lost or stolen packages. Please reach out to us and we can help you file a claim with the shipping carrier.

Do you ship internationally?

Unfortunately, at this time, we do not ship internationally.

Cool packaging! Who designed it?

We work to form lasting relationships with our partners in all areas of our operations, including design. Our wonderful logos and labels were designed by Emma Keenan-Grice. She is an Asian woman, visual designer and artist based out of San Francisco. Find her info here!