Organic Ambemohar Rice Koji | Authentic Aspergillus oryzae | Zoh Probiotics

Organic Ambemohar Rice Koji — the foundation of miso, sake, shio koji, and amazake. India's first.

🌍 Ships next business day worldwide · 🇮🇳 1–4 days India · 🇦🇪 5–9 days UAE · 🇯🇵🇰🇷 5–9 days Japan/Korea · 🇸🇬🇲🇾 5–9 days SEA · 🇺🇸🇬🇧🇨🇦🇦🇺 7–14 days

Koji is the single most important culture in Japanese cuisine. Aspergillus oryzae grown on rice underpins miso, sake, soy sauce, mirin, amazake, shio koji, and a thousand modern fermentation experiments emerging from R&D kitchens worldwide. Without koji, there is no miso. Without koji, there is no sake. It is the cornerstone of an entire culinary tradition.

Zoh's Rice Koji is grown on organic Ambemohar rice — the prized aromatic short-grain rice from Maharashtra, with a natural sweetness and floral fragrance that produces koji with distinctive depth and a subtly fruity flavour profile. We believe this is the only rice koji in the world made with this varietal — a genuinely unique fermentation building block.

Why Ambemohar koji is different from Japanese rice koji

Standard Japanese koji uses short-grain japonica rice, which produces a clean, neutral koji with classic enzymatic profile. Ambemohar is a uniquely aromatic Indian short-grain varietal, traditionally reserved for special occasions because of its intense fragrance. When inoculated with Aspergillus oryzae and properly fermented, the resulting koji carries trace floral and fruity notes that translate beautifully into amazake (markedly sweeter and more aromatic than standard) and sake (more complex, perfumed). For miso and shio koji, the difference is subtler but real — a more rounded, slightly sweeter umami profile.

What makes koji extraordinary

Aspergillus oryzae is one of the most enzymatically powerful microorganisms used in food. It produces:

• Amylase enzymes that convert starches to sugars — the basis of sake and amazake
• Protease enzymes that break down proteins into amino acids and umami compounds — the basis of miso, soy sauce, and meat tenderising
• Lipase enzymes that develop deeper, more complex flavours over time
• Glutamate, the natural source of pure umami, produced as protein breaks down

This enzymatic versatility is why one ingredient — koji — underpins so many of Japan's flagship foods. It's also why modern chefs use koji as a marinade, flavouring agent, and meat tenderiser. A 30-minute shio koji marinade transforms even ordinary fish or chicken.

What you can make with rice koji

• Shio koji — a 7-day marinade made from koji, salt, and water. The most useful shortcut to umami in modern cooking. Spreads on fish/chicken/tofu transform them.
• Amazake — a naturally sweet, low-alcohol fermented rice drink, traditional in Japan as a winter warmer. Made in 8–10 hours from koji + cooked rice.
• Miso — fermented soybean paste, made by combining koji + cooked soybeans + salt and aging 6–12+ months. Foundation of Japanese cuisine.
• Sake — the traditional fermented rice wine. Requires more skill and time but absolutely doable at home.
• Shoyu / soy sauce — fermented soy + koji + salt, aged 6–18 months. Homemade soy sauce is a different food entirely from commercial.
• Marinades and tenderisers — even unfinished koji works as a meat tenderiser. The enzymes break down proteins beautifully.
• Modern chef applications — koji-aged steaks, koji-cured fish, koji butter, koji ice cream. The frontier of fine dining is being built on this single ingredient.

Who is this for?

• Indian fermentation enthusiasts who want to make miso, sake, or shio koji at home and have struggled to source authentic koji
• Chefs and serious home cooks experimenting with umami-forward cooking
• Japanese, Korean, and East Asian expats abroad who want fresh koji-based products and can't easily source them
• Food writers and recipe developers exploring the koji frontier
• Anyone who has tasted shio koji and understands its transformative power
• Health-focused households wanting to make their own miso (the controlled-salt, no-additive version is dramatically healthier than store-bought)

India's first. Authentic. Lab-grown.

This is genuinely India's first commercially available rice koji. Until recently, Indian fermentation enthusiasts wanting to make miso or sake had to import koji from Japan or the US at significant cost and with viability concerns. Zoh's koji is grown in our own facility on organic Ambemohar rice, vacuum-packed for freshness, and shipped fast. We do not sell powdered koji-kin (spore inoculant) — we sell ready-to-use rice koji, which is what nearly every recipe calls for.

🌍 International shipping & delivery

We ship the next business day, every business day. Rice koji is shipped vacuum-sealed to preserve freshness and enzyme activity. Cold-chain not required for transit — the vacuum seal protects the culture for the journey. Delivery times by destination:

• India: 1–4 business days · free shipping on most orders
• UAE, Saudi Arabia, Kuwait, Qatar, Oman, Bahrain: 5–9 business days
• Singapore, Malaysia, Indonesia, Thailand, Philippines, Vietnam, Hong Kong: 5–9 business days
• Japan, Korea: 5–9 business days
• UK, Ireland, EU: 7–14 business days
• US, Canada, Australia, New Zealand: 7–14 business days
• Pakistan, Bangladesh, Sri Lanka, Nepal: 4–8 business days

Storage on arrival: Refrigerate immediately on arrival. Vacuum-sealed koji keeps for up to 3 months refrigerated, or 12 months frozen. Freezing does not damage the enzymes.

Customs: Rice koji is classified as a fermented food product and clears customs without issue. Full documentation included.

Freshness guarantee: If your koji arrives in poor condition, email info@zohprobiotics.com with a photo and we'll replace at our cost.

Frequently Asked Questions

What can I actually make with rice koji?

The classics: miso (fermented bean paste), shio koji (a salty all-purpose marinade), amazake (a sweet, naturally fermented rice drink), shoyu (soy sauce), sake, and amino sauces. It's also excellent as a marinade for meat and tofu — koji enzymes break down proteins and tenderise dramatically. Modern chefs use it for koji-aged meats, koji butter, and even koji ice cream.

What's the difference between Ambemohar Rice Koji and Pearl Barley Koji?

Ambemohar gives a sweeter, more aromatic, fruity flavour profile and is the traditional choice for sake and amazake. Pearl Barley produces a richer, deeper umami flavour — better suited to miso, garums, and savoury sauces. Many fermentation enthusiasts keep both.

How long does it last and how should I store it?

Keep refrigerated for up to 3 months from the date of receipt, or freeze for up to 12 months. Vacuum-sealed packaging keeps the koji active until you're ready to use it. Freezing does not damage the enzymes — thaw at fridge temperature when ready to use.

Is it beginner-friendly?

Yes. We include a starter guide with simple recipes — shio koji and amazake are 2–3 ingredient recipes that are nearly foolproof. Start there before tackling miso (which requires 6–12 months of aging) or sake (which requires more careful temperature control).

Is it gluten-free?

Yes — rice koji is naturally gluten-free, unlike barley koji. A great choice for gluten-sensitive home fermenters making miso or shoyu.

Will the koji survive shipping to UAE / Singapore / Japan / EU / US?

Yes. Vacuum-sealed rice koji travels well — the seal protects against moisture and contamination during transit. We ship to UAE, Saudi, Singapore, Malaysia, Indonesia, Thailand, Philippines, Hong Kong, Japan, Korea, UK, US, Canada, Australia, and most countries. Refrigerate immediately on arrival to preserve freshness for the next 3 months. If your koji arrives in poor condition, we replace at our cost.

How is this different from koji-kin (powdered spore starter)?

Koji-kin is the dried Aspergillus oryzae spore powder used to inoculate rice or barley to make koji. Our product is the finished rice koji — already grown, ready to use directly in recipes. Most home fermenters want finished koji because growing your own from spores requires precise temperature and humidity control over 48 hours. Buying ready-made koji is the practical path for almost all home applications.