Salt Koji Marinated Chicken and Vegetables on Seiro, Bamboo Steamer | A Gut-Loving Steamed Delight
- Aug 19, 2025
- 4 min read
Updated: Feb 24
CONTENTS
ABOUT THIS RECIPE |
This Japanese-style steamed chicken with seasonal vegetables is prepared in a seiro (traditional bamboo steamer), delivering tender chicken, vibrant veggies, and deep umami—all without added oils or frying. It’s a nutrient-rich, gut-friendly dish that’s both light and satisfying.
RECIPE OVERVIEW |
Prep Time: 15 minutes (plus 12–24 hours marinating)
Cook Time: 20 minutes total
Difficulty: Easy
Special Notes: No frying, no added sugar in the main dish
WHY YOU'LL LOVE THIS RECIPE |
Gut-friendly cooking method — steaming preserves nutrients, enzymes, and moisture without inflammatory oils.
Deep umami with minimal seasoning — shio-koji naturally enhances flavor while supporting digestion.
Balanced nutrition — protein, fiber, antioxidants, and prebiotics in one meal.
Easy prep, big payoff — marinate ahead, then steam for a gentle, delicious dinner.
GUT HEALTH BENEFITS |
Salt koji: A fermented seasoning rich in enzymes that aid digestion, boost umami, and support the microbiome.
Steaming method: Keeps vitamins and minerals intact, avoids excess oil, and is gentle on digestion. 👉 Learn more about the gut health benefits of steaming foods.
Chicken thighs: Provide high-quality protein and collagen to strengthen the gut lining.
Colorful vegetables: Supply antioxidants, fiber, and prebiotics to nourish healthy gut bacteria.
INGREDIENTS |
Chicken Marinade (Serves 2)
1.5 lb chicken thighs
2 Tbsp Salt Koji
1 tsp grated ginger
1 tsp grated garlic
1.5 Tbsp Ama-Koji or Koji Amazake
For the Chicken Tier
¼ cabbage
3 lemon slices
Seasonal Veggies (suggestions below):
7–8 stalks asparagus
1 carrot
1 long green onion (Tokyo Negi)
5 stalks broccolini
Dipping Sauce
2 Tbsp soy sauce koji
3 Tbsp organic extra virgin olive oil
½ tsp grated garlic
Mix all sauce ingredients in a small bowl until combined.
INSTRUCTIONS |
Marinate the Chicken
In a bowl, combine chicken thighs, salt-koji, grated ginger, grated garlic and ama-koji (sweet koji).
Cover and refrigerate for up to 12 hours.
Prepare the Steamer Tiers
Bottom tier: Place chopped cabbage evenly across the base. Layer marinated chicken on top, then add lemon slices.
Top tier: Cut vegetables into bite-sized pieces and arrange neatly.
Steam the Vegetables and Chicken
Place steamer over boiling water. Steam the vegetable tier for 7–8 minutes, then remove.
Continue steaming the chicken tier for another 12 minutes, or until fully cooked through.
Serve
Arrange chicken and vegetables on a platter. Serve with dipping sauce on the side.
SHOPPING TIPS |
SALT KOJI:
Make Your Own Salt Koji at Home:
Whenever possible, I recommend making salt koji at home. With just rice koji, salt, and water, you get fresher flavor and full control over ingredient quality.
Pre-made salt koji is also available at Japanese grocery stores if homemade one isn't for you.
Look for:
Refrigerated product
Simple ingredients (rice koji, salt, water)
No added alcohol, preservatives, or sugar
It can be difficult to find high-quality salt koji online because it must be refrigerated to maintain proper fermentation quality. I recommend purchasing it locally when possible.
AMA (SWEET) KOJI:
Ama koji is rarely available as a standalone product in stores. I always recommend making it at home if possible, since it is simple and contains only rice koji and water.
If you prefer a ready-made option, Hakkaisan’s Koji Amazake is very close to homemade ama koji. It uses only high-quality koji and water, without added sugar or unnecessary ingredients. You can often find it at Japanese grocery stores.
Choose the simplest ingredient list possible — quality matters.
KOJI AMAZAKE:
Make Your Own Amazake at Home:
Whenever possible, I recommend making Amazake at home. With just rice koji, rice, and water, you get fresher flavor and full control over ingredient quality.
If homemade amazake isn’t for you, you can still find high-quality options at Japanese grocery stores.
Hakkaisan’s Koji Amazake is one of the most popular and trusted brands. It is made with carefully crafted koji and has a clean, natural sweetness.
If you don’t live near a Japanese market, you can find it on Amazon — but always check the ingredient list to ensure there are no added sugars or additives.
SOY SAUCE KOJI:
Make Your Own Soy Sauce Koji at Home:
Homemade soy sauce koji using high-quality soy sauce and rice koji allows you to avoid preservatives. The flavor is noticeably more balanced when made fresh.
Pre-made soy sauce koji is also available at Japanese grocery stores if homemade one isn't for you.
Look for:
Refrigerated product
Simple ingredients (soy sauce + rice koji only)
No added sugar or unnecessary additives
Because this is a live fermented product, it is rarely available online in good condition due to refrigeration requirements. Local Japanese markets are your best option.
Choose clean, simple ingredients for best flavor.
New to Seiro Steaming? Start Here:
If you're curious about which bamboo steamer (seiro) to choose, sizes, materials, and the tools I personally use, I’ve put everything together in my Seiro 101 guide. It will help you select the right setup for your kitchen.
Also, learn more about 👉 the gut health benefits of steaming foods.
SERVING SUGGESTIONS |
A bowl of brown rice or fermented rice
Miso soup with wakame (seaweed) and tofu
A light pickled salad or "tsukemono" (Japanese pickles)
FINAL THOUGHTS |
This Salt Koji Marinated Chicken and Vegetables on Seiro is a perfect example of how traditional Japanese cooking techniques can transform a simple meal into a gut-health powerhouse. The steaming method keeps everything tender and nutrient-rich, while the salt-koji infuses a naturally savory depth that makes each bite satisfying without heavy seasoning. Whether you’re deep into your cho-katsu journey or just starting, this dish is a gentle, flavorful way to care for your gut—one delicious bite at a time.
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