Purpose: flavour100% Plant-Based

Tamari & Kelp/Shiitake Mushroom Umami Broth for Fish Sauce (Nam Pla / Nuoc Mam)

The complete culinary guide to replacing Fish Sauce (Nam Pla / Nuoc Mam) with plant-based Tamari & Kelp/Shiitake Mushroom Umami Broth. Exact conversion ratios, texture chemistry, and chef techniques.

How do you substitute Fish Sauce (Nam Pla / Nuoc Mam) with Tamari & Kelp/Shiitake Mushroom Umami Broth?

To substitute Fish Sauce (Nam Pla / Nuoc Mam), use Tamari & Kelp/Shiitake Mushroom Umami Broth at a conversion ratio of 1 tbsp tamari / dark soy sauce + 1/2 tsp dried wakame/kelp flakes or concentrated shiitake reduction (1:1 ratio) per 1 tbsp fish sauce. It is ideal for flavour and provides a similar texture and binding profile.

Simmering 1 sheet of kombu (dried kelp) and 2 dried shiitake mushrooms in 1 cup soy sauce creates a restaurant-quality vegan fish sauce that keeps for months.

Conversion Ratio

1 tbsp tamari / dark soy sauce + 1/2 tsp dried wakame/kelp flakes or concentrated shiitake reduction (1:1 ratio) per 1 tbsp fish sauce

Primary Purpose

flavour

Taste Match

Deeply savory, salty, oceanic, and packed with natural glutamates

Texture

Liquid seasoning

Source: VeganGyan Culinary Research Team

Official Culinary Conversion Ratio

1 tbsp tamari / dark soy sauce + 1/2 tsp dried wakame/kelp flakes or concentrated shiitake reduction (1:1 ratio) per 1 tbsp fish sauce

Chef's Technique & Instructions

Simmering 1 sheet of kombu (dried kelp) and 2 dried shiitake mushrooms in 1 cup soy sauce creates a restaurant-quality vegan fish sauce that keeps for months.

Flavor & Taste Profile:

Deeply savory, salty, oceanic, and packed with natural glutamates

Texture & Mouthfeel:

Liquid seasoning

Best Culinary Uses

  • Pad Thai, Thai green/red curries, Vietnamese pho broth, papaya salad (Som Tum), dipping sauces

Known Limitations & When NOT to Use

  • Slightly darker in color than clear fish sauce

Recipes Using This Swap

Tested dishes featuring Tamari & Kelp/Shiitake Mushroom Umami Broth

All Recipes →

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Frequently Asked Questions

Why is seaweed used to replicate fish sauce?
Seaweeds like kombu and wakame are naturally rich in marine minerals and glutamic acid, providing the distinct oceanic umami flavor profile of fish sauce without any animals.