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Koji AlchemyBy: Jeremy Umansky, Rich Shih "This book is remarkable."David Zilber, co author of The Noma Guide to Fermentation James Beard Foundation Book Award Finalist for Reference and Scholarship "The perfect next step."NPR's "Science Friday" This is the first book devoted to processes, concepts, and recipes for fermenting and culturing foods with koji, the microbe behind the delicious, umami flavors of Japanese cuisine In Koji Alchemy chefs Jeremy Umansky and
By: Jeremy Umansky, Rich Shih"This book is remarkable."—David Zilber, co-author of The Noma Guide to Fermentation
James Beard Foundation Book Award Finalist for Reference and Scholarship
"The perfect next step."—NPR's "Science Friday"
This is the first book devoted to processes, concepts, and recipes for fermenting and culturing foods with koji, the microbe behind the delicious, umami flavors of Japanese cuisine
In Koji Alchemy chefs Jeremy Umansky and Rich Shih—collectively considered to be the most practical, experienced, generous educators on the culinary power of this unique ingredient—deliver a comprehensive look at modern koji use around the world. Using it to rapidly age charcuterie, cheese, and other ferments, they take the magic of koji to the next level, revolutionizing the creation of fermented foods and flavor profiles for both professional and home cooks.
Koji Alchemy includes:
• A foreword by best-selling author Sandor Katz (The Art of Fermentation)
• Cutting-edge techniques on koji growing and curing
• Information on equipment and setting up your kitchen
• More than 35 recipes for sauces, pastes, ferments, and alcohol, including stand-outs like Popcorn Koji, Roasted Entire Squash Miso, Korean Makgeolli, Amazake Rye Bread, and more
“Koji Alchemy is empowering and does much to open the door to further creativity and innovation. . . . I can’t wait to see and taste the next wave of koji experimentation it inspires.” —Sandor Katz
"Next level fermentation fodder."—The Boston Globe
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★★★★★ 5
Worth it.
Color: Dark Brown, Size: 10
Adorable. Great quality. Fun little suit.
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Reviewed in the United States on April 7, 2026
★★★★★ 5
Handsome Son, Great Suit
Color: Brown, Size: 8, Color: Brown, Size: 8
We ordered this for my 9 yr old son who walked me down the aisle when I got married. It fit perfectly, was a great value, good quality, and looked great on him! The tweed pattern and color were perfect for the wedding.
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Reviewed in the United States on December 5, 2025
★★★★★ 5
Give me 100 more!
Color: Green, Size: 6, Color: Green, Size: 6
ADORABLE. perfect fit, amazing strong structured material. I’ll take one in every color!
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Reviewed in the United States on March 2, 2026
★★★★★ 5
Adorable!!!
Color: Green, Size: 3, Color: Green, Size: 3
This suit is adorable! I got it in 2 colors. Made the perfect Christmas picture outfits. The quality is great. I got them 1 size up so they could fit in it longer, and size up was a little big as expected. Im happy they will fit in them for another year.
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Reviewed in the United States on January 15, 2026
★★★★★ 4
Well made and very nice material.
Color: Dark Brown, Size: 10
This is a great suit the quality material and the color is better than expected. The slacks have waist adjustments that help with comfort. Definitely worth the price.
I give it 4 stars because it was supposed to be a slim fit but the jacket is really loose and not as form fitting as I expected, however the suit is worth the price.
My son loves it ! Color is perfect for him!
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Reviewed in the United States on December 27, 2025