About
Welcome to Just One Cookbook!
I’m so happy you’re here. I’m Nami, and for the past 15 years, I’ve been passionately sharing authentic, foolproof Japanese home-cooked recipes with people around the world.
はじめまして!菜美です。
どうぞよろしくお願いします。
How Just One Cookbook Started
Mr. JOC and I launched Just One Cookbook (JOC) in 2011. Back then, our goal was simple: to share my Japanese home cooking with friends and preserve the recipes I grew up with for our children.
What began as a simple blog soon evolved into a trusted resource for home cooks worldwide who wanted to bring Japanese flavors into their kitchens.
Today, Just One Cookbook is the internet’s largest Japanese recipe site for classic and easy-to-follow recipes in English.
Whether you’re a beginner or a seasoned cook, I will help you create delicious Japanese meals at home—with growing confidence and joy.

What You’ll Discover on JOC
Just One Cookbook can help your cooking journey every step of the way:
- 1,200+ Japanese recipes
- Step-by-step photos and clear instructions
- Substitution options
- How-to guides and cooking tips to build your skills
- Pantry pages to demystify Japanese ingredients
- 500+ video tutorials on our YouTube channel (1M+ subscribers)
- Free weekly newsletters with recipes and tips
JOC Books
Thanks to your requests, I’ve packaged my favorite recipes into three books!
Find them in paperback and digital e-book:
- Essential Japanese Recipes
- Essential Japanese Recipes, Vol. 2
- Essential Japanese Recipes, Vol. 3: Osechi Japanese New Year Recipes
As an Amazon Associate, I earn from qualifying purchases.
JOC in the Media
We’re honored to receive media recognition for our expertise in Japanese home cooking:
Experience Japan Through Just One Cookbook
Beyond recipes, I love sharing insights into Japanese culture and traditions—so you can truly appreciate the meaning behind each dish you prepare.

JOC Japan Travel
My family and I document our travel adventures on JOC Japan Travel, our sister site for independent travelers launched in 2025.
We share insider tips and in-depth guides to help you explore Japan like a local. The user-friendly interface makes it easy to search for specific destinations and itineraries, including seasonal highlights like cherry blossom spots and holiday travel plans.
JOC Goods
In September 2024, we launched JOC Goods. Our online shop is dedicated to artisan-made Japanese tableware and kitchenware.
I personally handpick each piece from small kilns and workshops across Japan. My mission is to help you create a thoughtful, beautiful dining experience at home.
Now, you can serve your favorite homemade Japanese dishes in handcrafted tableware—setting the stage for meaningful meals and lasting memories around the table.

💛 How Dyslexia Shaped My Recipes
I’ve always loved helping others cook Japanese food at home. What you may not know is that my lifelong struggle with reading and learning has shaped how I write and share recipes.
In 2025, I was diagnosed with dyslexia. The diagnosis finally explained the challenges I’ve faced for years. Suddenly, everything made sense.
Since I started Just One Cookbook, I’ve created every recipe with step-by-step pictures, clear instructions, and a well-organized layout. Back then, I didn’t know I had dyslexia—I was simply doing what worked best for me.
I hope that my visual-forward recipes make cooking easier and more joyful for everyone—including fellow dyslexic learners like me!

Helping the Community
Over the years, I’ve received heartfelt messages from readers sharing how my recipes helped them reconnect with their culture, relive cherished food memories, and even heal from illness.
Cooking is more than just making meals—it’s a way to bring family and friends together, and I’m honored to be a part of that journey.
My goal is to make Japanese home cooking simple and accessible to everyone. I’m here to show you that cooking Japanese food is easier than you think!
My team and I are here to help you. Feel free to reach out using the contact form or leave a comment on the blog post. We’ll get back to you within two business days.
How to Best Support the Blog
Over the years, many of you have asked how you can support what we do. Here are the ways that help most:
- Rate and comment on the recipe you try. Your feedback helps me improve my recipes, and your tips and variations give other readers the confidence to try something new.
- Subscribe to my newsletter to stay connected! It’s where I share the latest updates, behind-the-scenes stories, and special content—straight from our kitchen to yours. My newsletter community has always been the heart of JOC, and I’d love for you to be part of it.
- Sign up for JOC PLUS membership. Ads are what keep every recipe on JOC free. If you’d rather browse without them, our ad-free membership is $25 a year and comes with extra perks.
- Share the site with friends and follow us on social media. This means the world to us. Every little action helps keep JOC going strong—thank you!
Frequently Asked Questions
I’m new to your site. Where do I start?
- First, sign up for the free newsletter. It’s the easiest way to familiarize yourself with our website and learn more about what we offer.
- If you have time, start with our guide to Japanese cooking.
- Just getting started with Japanese cooking? Try these 5 Easy Japanese Recipes to Cook at Home.
- Ready to cook? Explore recipes in our recipe index.
Where to buy Japanese ingredients?
Explore these fan-recommended resources:
Do you have a cookbook?
Do I need to buy all the Japanese ingredients?
Yes and no. You’ll need some basic ingredients to create authentic Japanese flavors, but you don’t have to buy everything at once. Start with the pantry essentials and gradually build your pantry as you cook more Japanese dishes.
Meet Our Team
Since 2016, Mr. JOC and I have had an incredible team working behind the scenes to help us grow, create, and share with our JOC community.

Namiko Hirasawa Chen (Nami), Co-Founder & Recipe Developer
Born and raised in Yokohama, Japan, and now based in San Francisco, Nami has spent the past 15 years sharing home-style Japanese recipes with a global audience. She is passionate about preserving culinary traditions and empowering home cooks with clear, step-by-step guidance. Inspired by her own experience with dyslexia and learning differences, she takes a visual-first approach that makes Japanese cooking more accessible to all types of learners.

Shen Chen (Mr. JOC), Co-Founder & Operations
Shen Chen, affectionately known as Mr. JOC, is the co-founder of Just One Cookbook and the behind-the-scenes force that keeps everything running smoothly. Beyond photographing and video-recording Nami as she creates her recipes, he proudly serves as her chief taste tester. Responsible for operations, he manages the business and technology behind the brand, allowing Nami to focus on developing and sharing authentic Japanese recipes.
With a deep passion for food, culture, and travel, Mr. JOC has expanded Just One Cookbook beyond recipes—running JOC Goods, an artisan Japanese tableware shop, and curating JOC’s travel content on JOC Japan Travel, offering an insider’s guide to their family’s adventures in Japan and beyond.

Naomi Kodo, Community Manager & Recipe Developer
Growing up in the Shikoku region, Naomi experienced firsthand the integral connection of the sea to Japanese cooking. She would join her mother and grandmother to gather seaweed at the beach, and then help in the drying process until the seaweed was ready for the kitchen and used in a variety of Japanese dishes.
Her childhood of observing her family’s enjoyment of cooking from scratch gave her a strong affection for healthy cooking and traditional Japanese cuisine. She carried that experience and knowledge to her current home in the San Francisco Bay area, where she loves cooking, photography, travel, and dancing.

Janet Otsuki, Copy Editor
Janet was born and raised in California, where she grew up watching her mom and aunties prepare traditional Japanese cuisine and the American classics with loving care. This sparked her deep appreciation for home cooking and delicious food.
Janet attended university in the San Francisco Bay Area and later worked in corporate communications and as a freelance writer. Now an empty nester, she resides with her husband and their senior dog in Southern California. She loves learning and writing about the intersection of history, culture, and food.

Daisy Stone, Copy Editor
Daisy is a writer and tour guide with a deep love for Japanese food and food culture. Originally from the United States, she has lived in Japan for the past six years. When she was first adjusting to cooking in Japan, Just One Cookbook became an invaluable resource in her kitchen, helping her navigate Japanese ingredients, recipes, and everyday home cooking.
Daisy currently lives in Kamakura, where she spends her free time relaxing by the beach and exploring the historic city’s many temples and cafés. She also loves baking and is still perfecting her ideal shokupan loaf!

Jason Leung, Videographer & Editor
Jason is currently located in the Bay Area, where he enjoys the convenience of being within a 3-4 hour reach of almost any environment. He currently works as a freelance photographer and videographer, primarily focused on documenting non-profit stories in the Bay Area as well as filming and photographing food content for restaurants. Although he enjoys capturing a variety of subjects, Jason’s favorite subject to shoot is food, as it offers a unique opportunity to connect with others and tell compelling stories. Furthermore, he finds that there’s always a perk of being able to enjoy the food after a shoot!
While he has a strong passion for food photography, Jason remains open to exploring other genres to expand his skillset and find inspiration from other photographers. Ultimately, his goal is to make a positive difference in people’s lives through his photography.

Andy Cheng, Travel Photographer & Writer
Andy is a photographer, writer, and chef who grew up in the UK. His mother is Japanese, and his father is from Hong Kong, so he was exposed to various cultures and cuisines. His father, who was once a chef, taught him how to cook from a young age, which ignited his passion for food.
After graduating from the University of Nottingham in the UK with a bachelor’s in Architecture, he moved to Tokyo to seek new adventures. It was there that he realized he didn’t want to be an architect but wanted to cook. This led him to train in various restaurants across Japan, from Roppongi, Tokyo, to a Michelin Star restaurant in Sapporo, Hokkaido.
Now, while cooking his own menu at various pop-up events, Andy also writes about Japanese food, culture, and lifestyle. If he’s not cooking or writing, he’s probably on a drive, taking some photos, or eating at his local ramen shop.

Enzo Chen, Content Creator
Enzo is Nami and Mr. JOC’s son, an aspiring cook with a curious mind and a big passion for good food. He’s currently studying Molecular & Cell Biology and Data Science at UC Berkeley, where he brings his love of science into the kitchen. Just like in the lab, he enjoys experimenting with ingredients thoughtfully and creatively.
Enzo is also the star of our College Meal series on Just One Cookbook, sharing easy, budget-friendly one-pan and one-pot recipes made for college students and busy home cooks. Even with limited time, tools, or ingredients, he shows how anyone can cook satisfying meals. In his free time, he loves preparing Japanese dishes for his friends.