KETO VERDICTYES
Fish sauce is keto-friendly when unsweetened—~3.6g net carbs per 100g (about 0.2g per teaspoon) and used in tiny amounts (1–2 tsp). A powerful umami booster for dressings, marinades, and stir-fries.
Is Fish Sauce Keto?
Asian Sauces
Fish sauce is keto-friendly when unsweetened—~3.6g net carbs per 100g (about 0.2g per teaspoon) and used in tiny amounts (1–2 tsp). A powerful umami booster for dressings, marinades, and stir-fries.
- Net carbs (100g)3.6g
- Protein (100g)5g
- Fat (100g)0g
- Keto verdictKeto-friendly
NUTRITION FACTS
Per 100g (raw)
Net Carbs
3.6g
Total Carbs
3.6g
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.
WHERE TO BUY
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Red Boat Fish Sauce, Premium 40°N (17 fl oz)
Red Boat 40°N is made from just two ingredients (wild-caught black anchovies and sea salt) with no sugar, preservatives, or additives, making it a zero-carb, keto-clean way to add umami depth to marinades and dressings.
Red Boat Fish Sauce, Phamily Reserve 50°N Classic (8.45 fl oz)
The top of Red Boat's own lineup: a small-batch, higher-protein 50°N first-press fish sauce made from the same two ingredients (black anchovy and sea salt) but with markedly more nitrogen content and depth than the standard 40°N, for readers who want the most concentrated, additive-free option available.
Son Fish Sauce, Premium Vietnamese Artisanal Fish Sauce Since 1951 (17.0 fl oz)
A family-run Vietnamese fish sauce brand (est. 1951) independently praised by food writers as among the best from Vietnam; made from just anchovy and sea salt with no added sugar, MSG, or preservatives, giving keto shoppers a genuinely different, award-winning option beyond Red Boat.