Super Gut-Friendly Salt Koji & Herb Marinated Cod Salad
- Hitomi
- Aug 29
- 2 min read
Updated: 13 hours ago
Easy Gluten-Free Japanese Fermented Recipe

Contents
About This Salt-Koji Recipe
This dish takes affordable cod and elevates it into a gut-health powerhouse with the magic of salt koji and herbs. Paired with a probiotic-rich dressing and a nutrient-dense salad, it’s the perfect combination of flavor, health, and simplicity.
Recipe Overview
Prep Time: 20 min (plus 6–12 hrs marinating)
Cook Time: 10 min
Total Time: 6–12 hrs 30 min
Serving Size: 2 servings
Cuisine: Japanese-inspired
Equipment Needed: Mixing bowls, frying pan, whisk
Difficulty Level: Easy
Suitable For: Gluten-free
Gut Health Benefits
Cod → Lean protein, omega-3s, supports digestion & gut lining.
Salt-Koji & Amazake → Probiotics that promote healthy gut microbiota & nutrient absorption.
Herbs → Anti-inflammatory, digestive support.
Salad Greens & Tomatoes → Fiber & antioxidants for gut balance.
Walnuts & Olives → Healthy fats + prebiotics to fuel gut bacteria.
Ingredients
Versatile Salt Koji & Herb Marinade

3 Tbsp salt-koji
1 tsp grated garlic
2 Tbsp chopped rosemary & thyme
3 Tbsp olive oil
Juice of ½ lemon
Cod

2 cod fillets
2 Tbsp Salt Koji & Herb Marinade
Dressing

1 Tbsp white wine vinegar
¼ cup olive oil
½ tsp salt-koji
1 tsp amazake
Pinch of black pepper
Salad

3 cups salad greens
2 tomatoes
7–8 green olives
¼ cup parmesan cheese
⅛ lemon
1 Tbsp roasted walnuts
Instructions:
Marinate cod in Salt Koji & Herb Marinade mix (6–12 hrs).
Grill the marinated cod in a pan:
In a frying pan lined with parchment paper, sear the marinated cod on one side over high heat for about 2 minutes until lightly browned.
Flip the cod, then cover with a lid and cook over medium heat for about 5–7 minutes until cooked through.
Salad: Emulsify dressing, toss salad, top with cod, lemon juice & walnuts.
Tips & Variations
Make Ahead & Store: This marinade can be made in a larger batch and kept in the refrigerator for up to 1 week. It pairs wonderfully with white fish, chicken, vegetables, and even lamb.
Flexible Herbs: Feel free to swap in your favorite herbs depending on what you have on hand—such as oregano, chives, or sage.
For Dressings: When making a dressing with this marinade, the key is to emulsify gradually by adding a small amount of olive oil first. If you pour in all the oil at once, it won’t emulsify and the oil and vinegar will separate. Once it separates, it’s nearly impossible to bring it back together!
Salad Variations: Try adding seasonal vegetables or fruits to your salad for extra freshness and color.
Serving Suggestions
Perfect light dinner with rice or quinoa on the side
Great for meal prep—prep the marinade ahead and grill when ready
Can swap cod with chicken, other types of fish, or even tofu
Final Thoughts
Healthy doesn’t mean boring—this Salt Koji & Herb Marinated Cod Salad proves that fermented foods can make even simple ingredients shine. It’s gut-friendly, budget-friendly, and delicious enough to enjoy every week.
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