Our Products

Welcome to our one-stop shop for delicious and nutritious Japanese fermented foods! Our star product is natto, a traditional Japanese food made from fermented soybeans. We offer a variety of options to suit everyone’s taste buds. Perfect for teenagers and adults alike, our natto products are not only tasty but also packed with health benefits.

Explore our range of Japanese fermented foods and start reaping the benefits of these nutrient-packed goodies today!

We proudly ship nationwide in the United States!  E-commerce orders for Natto are normally shipped on the Monday or Tuesday following your order placement, using UPS.

If you are local to New England, please consider visiting our our farm stand at our natto kitchen in Arlington, MA and collect your purchase here!  You can buy directly from the store (starting from a single pack) and pay right there with Venmo or a credit card.  To access the pick-up station, use the code “C710X” at the door. Your orders will be located on the lower shelf of the fridge.  There is no need to order in advance.  That said, if you would like to pick up a large number of nattos, please order in advance online and specify “Local Pickup”.   

A note about natto packaging and shipping options: Because natto has a live active culture, it is robust and can endure room-temperature shipping for several days,  It has been shipped this way successfully for decades.  However, beyond a day or so, it will take on a more intense flavor.  While some customers report they prefer this flavor, customers in places with longer estimated shipping times from Massachusetts may wish to select a fast shipping option at checkout.  Note that we don’t offer shipping options that are estimated to take longer than three days, and we recommend you choose one or two day shipping if possible.  For a small charge, we offer optional cold-packs (this is our default option) and (for orders of 24 packs) an insulated box option.  These options can help keep your natto cooler during shipping.  We recommend you experiment with what works best for your particular destination and flavor preferences.

A note about shipping responsibility: Once an order leaves our facility, it is under the care of the shipping carrier.  We have observed that UPS shipments can be delayed during holiday seasons and bad weather events, and sometimes can be damaged in shipment.  For the most effective assistance with delayed packages, please reach out to the carrier with your tracking number. They are best equipped to support you.  While we cannot be responsible for the shipping courier’s actions, and our shipments do not come with a shipping performance guarantee, please do let us know if you experience problems in order to assist to learn about the carrier’s performance.nat


Thanks again for visiting Aya’s Fermented Foods! We’re delighted to bring you the authentic taste of Japanese fermented foods, with natto at the heart of our offerings.