Through Koji Collaborations, we partner with chefs, restaurants, bars, and brands to design custom koji-fermented products tailored to your culinary vision. From misos, shoyus, and garums to innovative beers, cocktails and sweets. If you can imagine it, we can ferment it.

We love upcycling culinary side streams and surplus ingredients, giving them new life through fermentation, and turning potential waste into signature flavor-packed creations. Whether you’re looking to add depth to your menu, develop a one-of-a-kind product, or explore how koji can fit into your operations, we collaborate closely to merge innovation with sustainable craftsmanship.

Have surplus ingredients or side streams going to waste?
If you have unused bread, grains, or other culinary byproducts that currently get thrown out, we want to help you upcycle them. Reach out to us to explore how we can transform your surplus into a unique, high-value ingredient built exclusively for your brand.

In our workshops, we share the craft of koji fermentation. Tailored for all skill levels, these hands-on sessions teach the fundamentals of making traditional misos, shoyus, and sweet amazakes from scratch.

True to our mission, we focus heavily on sustainability. You will explore how to look at surplus ingredients and culinary side streams through a new lens, transforming potential food waste into rich, complex flavors. Instead of hosting fixed public classes, we design private, corporate, and group workshops tailored specifically to your needs.

Ready to plan a workshop?
If you want to host a unique corporate team-building event, organize a private masterclass, or arrange a custom session for an interested group, we would love to hear from you. Get in touch with us to start planning your custom workshop.

For restaurants, food producers, and innovators who need koji at scale, we offer wholesale options in both fresh and dried formats. Whether you’re looking for reliable deliveries of koji to support your own miso, shoyu, or amazake production, or want large-scale batches tailored to your needs, we can supply high-quality koji consistently and affordably.

Beyond bulk orders, we also provide customized solutions, from adapting koji to specific grains or side streams, to creating tailored fermentation bases for your products. Our goal is to help you integrate koji into your workflow, reduce waste, and unlock new flavor possibilities at any scale.

Looking to source koji in bulk?
Whether you need a single batch for a special project or an ongoing supply for your production line, we accommodate orders of any scale. Get in touch with us to discuss your wholesale requirements and explore your custom options.