Fish Sauce Overview
Quick Carb Snapshot
- Carbs (per 100 g): ~1–2 g
- Carbs (standard portion): ~0 g per tbsp
- Glycemic Index: Zero
- Best Substitutes: Tamari, soy sauce
- Diabetic-Friendly? Yes
- Keto-Friendly? Yes
Key Traits
- Texture: Thin liquid
- Flavor: Salty, pungent, umami-rich
- Carb Impact: Negligible
- GI / GL Notes: No blood glucose impact
- Common Uses: Marinades, stir-fries, sauces
Best For
- Boosting umami without carbs
- Keto Asian-style dishes
- Flavoring soups and sauces
Avoid For
- Fish allergies
- Very low-sodium diets
- Sweetened varieties
How Fish Sauce Compares to Higher-Carb Ingredients
Texture & Structure
- Pure liquid seasoning
- No thickening effect
- Used in drops to tablespoons
Flavor & Nutrition
- Extremely concentrated flavor
- Virtually calorie-free
- No sugars or starches
How to Substitute Fish Sauce
Low-Carb Swaps by Use
- Umami: Tamari
- Vegan: Mushroom broth + salt
- Reduced odor: Anchovy paste (small amounts)
Tips for Successful Swaps
- Add gradually
- Balance acidity and sweetness
- Ventilate while cooking
Storage & Shelf Life
Pantry
Shelf-stable; refrigerate after opening for optimal flavor.
Cooked
Dishes store normally depending on recipe.
Signs It Has Gone Bad
- Cloudiness
- Off smell
- Mold around cap
Carb / Keto & Dietary Notes
- Carb Impact: Negligible
- Keto Use: Excellent
- Diabetic Notes: Safe
This information is for educational purposes only and not medical advice.
Allergy & Dietary Flags
- Gluten-Free: Yes
- Nuts: No
- Nightshade: No
- Vegan / Vegetarian: No
Carb & Dietary Tags
- Low-Carb: Yes
- High-Carb: No
- Keto-Friendly: Yes
- Diabetic-Friendly: Yes
- Low GI: Yes
Related Ingredients
Often used alongside tamari and soy sauce, fish sauce provides zero-carb umami depth.