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Best Soy Sauce Substitute in Smoothie

5 tested options with exact ratios, science-backed explanations, and tips for success.

Quick Answer

The best substitute for Soy Sauce in Smoothie is Tamari because it provides a similar umami and salty flavor with a smoother, less harsh profile that blends better in cold, sweet, and creamy mixtures.

Top 5 Soy Sauce Substitutes for Smoothie

Substitute Ratio
Tamari (Best) 1 teaspoon per 1 tablespoon soy sauce
Coconut Aminos 1 tablespoon per 1 tablespoon soy sauce
Bragg Liquid Aminos 1 teaspoon per 1 tablespoon soy sauce
Homemade Umami Blend (Mushroom Broth + Salt) 2 tablespoons mushroom broth + 1/4 teaspoon salt per 1 tablespoon soy sauce
Fish Sauce (very diluted) 1/4 teaspoon fish sauce + 1 tablespoon water per 1 tablespoon soy sauce

Detailed Guide: Each Soy Sauce Substitute in Smoothie

Tamari (Best Option)

1 teaspoon per 1 tablespoon soy sauce
Vegan Gluten-Free Dairy-Free Fat-Free Nut-Free
Quick tip: Tamari is smoother and less salty, blending well without overpowering the smoothie’s sweetness.

Tamari is a gluten-free soy sauce variant with a richer, less sharp umami flavor due to its brewing process, making it ideal for cold, sweet applications like smoothies. The amino acids and salts in tamari enhance savory depth without adding bitterness or harshness.

When using tamari in smoothies, start with a smaller amount and adjust to taste, as its umami can subtly enhance flavors without being intrusive. Ensure thorough blending to distribute the flavor evenly.

Compared to soy sauce, tamari results in a more harmonious flavor profile in smoothies, maintaining umami complexity while preserving the intended sweetness and creaminess.

Coconut Aminos

1 tablespoon per 1 tablespoon soy sauce
Vegan Gluten-Free Dairy-Free Fat-Free Nut-Free
Quick tip: Coconut aminos are sweeter and less salty, which can complement the smoothie’s natural sweetness but may require balancing with a pinch of salt.

Coconut aminos are derived from fermented coconut sap and contain natural sugars, giving them a milder, sweeter umami flavor with less sodium than soy sauce. This makes them suitable for smoothies where a subtle savory note is desired without overwhelming saltiness.

When substituting, consider reducing other sweeteners slightly or adding a small pinch of salt to maintain balance. Blend thoroughly to ensure even flavor distribution.

The final smoothie will have a gentler umami character and a slightly sweeter profile compared to soy sauce, which can enhance fruit flavors without harshness.

Bragg Liquid Aminos

1 teaspoon per 1 tablespoon soy sauce
Vegan Gluten-Free Dairy-Free Fat-Free Nut-Free
Quick tip: Liquid aminos provide a similar savory flavor but can be slightly more bitter, so use sparingly in smoothies.

Liquid aminos are a non-fermented soy protein seasoning that mimics soy sauce’s umami and saltiness but with a slightly different amino acid profile, which can introduce mild bitterness in cold, sweet applications.

Use small amounts and taste as you go to avoid overpowering the smoothie. Proper blending is essential to avoid uneven flavor pockets.

The smoothie will retain a savory depth but may have a subtle bitter edge compared to soy sauce, so balancing with sweet ingredients is important.

Homemade Umami Blend (Mushroom Broth + Salt)

2 tablespoons mushroom broth + 1/4 teaspoon salt per 1 tablespoon soy sauce
Vegan Gluten-Free Dairy-Free Fat-Free Nut-Free
Quick tip: This blend adds umami and saltiness without soy flavor, but may dilute smoothie thickness slightly.

Mushroom broth contains natural glutamates that provide umami flavor, and combined with salt, it can mimic the savory and salty aspects of soy sauce. This works in smoothies by adding depth without introducing soy or gluten.

Prepare a concentrated mushroom broth and adjust salt carefully to avoid over-salting. Blend well to maintain smooth texture.

The resulting smoothie will have a subtle earthy umami note and balanced saltiness, but it may lack the distinctive soy flavor and can slightly thin the texture.

Fish Sauce (very diluted)

1/4 teaspoon fish sauce + 1 tablespoon water per 1 tablespoon soy sauce
Gluten-Free Dairy-Free Fat-Free Nut-Free
Quick tip: Fish sauce is very pungent and salty; heavy dilution is required to avoid overpowering the smoothie.

Fish sauce contains strong umami compounds and saltiness similar to soy sauce but with a pronounced fishy aroma that can be off-putting in sweet, creamy smoothies. Dilution reduces intensity but may still impart unexpected flavors.

Use minimal amounts and blend thoroughly. Test flavor carefully to avoid overwhelming the smoothie.

The final product may have an unusual savory note that contrasts with the smoothie’s sweetness, making it less ideal but usable in a pinch.

Vegan Soy Sauce Substitutes for Smoothie

Full Vegan guide →
Tamari
Ratio: 1 teaspoon per 1 tablespoon soy sauce

Tamari is smoother and less salty, blending well without overpowering the smoothie’s sweetness.

Coconut Aminos
Ratio: 1 tablespoon per 1 tablespoon soy sauce

Coconut aminos are sweeter and less salty, which can complement the smoothie’s natural sweetness but may require balancing with a pinch of salt.

Bragg Liquid Aminos
Ratio: 1 teaspoon per 1 tablespoon soy sauce

Liquid aminos provide a similar savory flavor but can be slightly more bitter, so use sparingly in smoothies.

Homemade Umami Blend (Mushroom Broth + Salt)
Ratio: 2 tablespoons mushroom broth + 1/4 teaspoon salt per 1 tablespoon soy sauce

This blend adds umami and saltiness without soy flavor, but may dilute smoothie thickness slightly.

Gluten-Free Soy Sauce Substitutes for Smoothie

Full Gluten-Free guide →
Tamari
Ratio: 1 teaspoon per 1 tablespoon soy sauce

Tamari is smoother and less salty, blending well without overpowering the smoothie’s sweetness.

Coconut Aminos
Ratio: 1 tablespoon per 1 tablespoon soy sauce

Coconut aminos are sweeter and less salty, which can complement the smoothie’s natural sweetness but may require balancing with a pinch of salt.

Bragg Liquid Aminos
Ratio: 1 teaspoon per 1 tablespoon soy sauce

Liquid aminos provide a similar savory flavor but can be slightly more bitter, so use sparingly in smoothies.

Homemade Umami Blend (Mushroom Broth + Salt)
Ratio: 2 tablespoons mushroom broth + 1/4 teaspoon salt per 1 tablespoon soy sauce

This blend adds umami and saltiness without soy flavor, but may dilute smoothie thickness slightly.

Fish Sauce (very diluted)
Ratio: 1/4 teaspoon fish sauce + 1 tablespoon water per 1 tablespoon soy sauce

Fish sauce is very pungent and salty; heavy dilution is required to avoid overpowering the smoothie.

Dairy-Free Soy Sauce Substitutes for Smoothie

Full Dairy-Free guide →
Tamari
Ratio: 1 teaspoon per 1 tablespoon soy sauce

Tamari is smoother and less salty, blending well without overpowering the smoothie’s sweetness.

Coconut Aminos
Ratio: 1 tablespoon per 1 tablespoon soy sauce

Coconut aminos are sweeter and less salty, which can complement the smoothie’s natural sweetness but may require balancing with a pinch of salt.

Bragg Liquid Aminos
Ratio: 1 teaspoon per 1 tablespoon soy sauce

Liquid aminos provide a similar savory flavor but can be slightly more bitter, so use sparingly in smoothies.

Homemade Umami Blend (Mushroom Broth + Salt)
Ratio: 2 tablespoons mushroom broth + 1/4 teaspoon salt per 1 tablespoon soy sauce

This blend adds umami and saltiness without soy flavor, but may dilute smoothie thickness slightly.

Fish Sauce (very diluted)
Ratio: 1/4 teaspoon fish sauce + 1 tablespoon water per 1 tablespoon soy sauce

Fish sauce is very pungent and salty; heavy dilution is required to avoid overpowering the smoothie.

❌ What NOT to Use as a Soy Sauce Substitute in Smoothie

Worcestershire Sauce

Worcestershire sauce contains vinegar and anchovies, which introduce strong acidic and fishy notes that clash with the sweet and creamy base of a smoothie, resulting in an unpleasant flavor.

Miso Paste

Miso paste is too thick and dense for smoothies, and its strong fermented flavor can overpower the delicate balance of fruit and dairy or plant-based milks, making the texture gritty and the taste overly pungent.

Liquid Aminos

While similar in flavor, liquid aminos have a more pronounced salty and slightly bitter taste that can dominate the smoothie’s flavor profile and may not blend as seamlessly as tamari.

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