Fish sauce is keto-friendly when unsweetened—~1g net carbs per 100g and used in tiny amounts (1–2 tsp). A powerful umami booster for dressings, marinades, and stir-fries.
Is Fish Sauce Keto?
Asian Sauces

KETO VERDICTYES
Fish sauce is keto-friendly when unsweetened—~1g net carbs per 100g and used in tiny amounts (1–2 tsp). A powerful umami booster for dressings, marinades, and stir-fries.
- Net carbs (100g)1g
- Protein (100g)5g
- Fat (100g)0g
- Keto verdictKeto-friendly
NUTRITION FACTS
Per 100g (raw)
Net Carbs
1g
Total Carbs
1g
Fiber
0g
Protein
5g
Fat
0g
Calories
35
Source: USDA FoodData Central
WHY IT'S KETO-FRIENDLY
- Very low net carbs and used by the teaspoon
- Massive flavor-per-drop reduces need for sugary sauces
- Fermented and concentrated—great for umami without carbs
- Pairs with fatty meats and oils to balance keto macros
HEALTH BENEFITS
- Naturally occurring amino acids from fermented fish
- Adds savory depth which can improve meal satisfaction and adherence
- Trace minerals may be present depending on brand
PREPARATION SUGGESTIONS
KETO NƯỚC CHẤM
Whisk fish sauce with lime juice, water, minced garlic, chili, and a touch of allulose for a classic Vietnamese-style dipping sauce.
UMAMI STIR-FRY
Finish a skillet of cauliflower-rice or shirataki-noodles with 1–2 tsp fish sauce and sesame-oil.
MARINADE BOOSTER
Add to garlic–ginger–lime marinades for chicken thighs or pork; a little goes a long way.
SAVORY DRESSINGS
Blend with vinegar-white, lime, chili, and olive oil for a punchy salad dressing.