Weekly Subscription to Organic Boston Natto (10% off)

Crafted in Arlington, MA, Boston Natto is a locally-made superfood bursting with Vitamin K2, nattokinase, and potent probiotics. Our Japanese founder journeyed through Japan and North America, gleaning production insights from traditional natto factories. Handmade in small batches, we produce a fresh product, never resorting to freezing. We proudly use eco-friendly, organic, non-GMO soybeans from Minnesota. Choose Boston Natto for an unparalleled, authentic taste, setting it apart from common store-bought options which are typically previously frozen.  Our natto ships in 5oz (140 g) packs.

From: $43.20 every Sunday




Please specify the number of 5 oz (140 gram) natto packs you would like to order, and your shipping preferences.  This is a weekly subscription.

Important shipping information (PLEASE READ)

  • Shipping: Several shipping options are offered. The UPS Ground shipping option is only recommended for destinations within two days‘ shipping time from Boston (roughly the US Northeast).  See the map on this page for your estimated shipping time. We recommend specifying cold packs and faster shipping options if you are far from Massachusetts, and this is the default setting.  Note that UPS does not guarantee their shipping times, and that shipping times tend to stretch longer during holidays and bad weather events.  Please plan your orders accordingly.
  • A note about shipping methods and natto freshness: When stored continuously at refrigerator temperatures (ideally 5ºC / 40ºF), natto is at peak quality for about 10 days and is still considered edible for a month or more.  Natto can safely tolerate room temperatures for a number of days, but it will gradually ferment and gain a stronger flavor and smell.  Many will find it objectionable after about three days at room temperature.  Shipping options without cold packs are not temperature controlled, and may lead to additional natural fermentation and a stronger taste.  Cold packs last approximately 24-36 hours.  For this reason, shipping to farther destinations, using slower shipping options, shipping during times UPS is delayed, or omitting cold packs may expose your natto to warmer temperatures for an extended period of time.  Aya’s Culture Kitchen cannot control or prevent these occurrences, though faster shipping options and cold packs will help.  It is up to you what shipping method to use.  Many customers report that during the colder months, regular UPS ground shipping without cold packs in the Northeast region provides acceptable results.  Customers farther away have generally found that UPS ground shipping is not fast enough.

About our natto

  • Superfood Powerhouse: Packed with natural sources of plant-based proteins, Vitamin K2, and nattokinase for optimal gut-health benefits.
  • Locally Handmade: Crafted with care in small batches in Arlington, MA, ensuring the freshest natto experience.
  • Superior Ingredients: We only use top-quality organic, non-GMO soybeans grown specifically for natto.
  • Authentic Expertise: Made by a US-educated Japanese biologist who has been trained in natto production by some of the most experienced long-time artisanal natto producers in Japan and the US.
  • Always Fresh, Never Frozen: Unlike most nattos from Asian supermarkets that have been imported frozen, our Boston Natto is always fresh and never frozen. This preserves the strength of its probiotics and maintains its authentic taste and texture.
  • Eco-friendly: Natto produced in Asia and sold in the US is often made with US soybeans which have been shipped across the world twice.  By making our natto directly here in the US, we eliminate carbon impact of this unnecessary global shipping.

Choose Boston Natto for a true, fresh, and authentic natto experience.

Legal Disclaimer

Statements regarding dietary supplements have not been evaluated by the FDA and are not intended to diagnose, treat, cure, or prevent any disease or health condition.

Additional information

Weight 8.5 lbs
Dimensions 9 × 9 × 9 in

8 packs, 12 packs, 16 packs, 24 packs


Without cold packs in a standard box, With cold packs in a standard box, With cold packs in an insulated box


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