Although fish sauce may seem like a simple staple in Thai kitchens, the truth is that it often contains ingredients many people are unaware of. In today’s health-conscious world, even basic condiments like fish sauce deserve closer inspection—just like the main ingredients in your meals. Particularly, the “hidden additives” in fish sauce may surprise you, as it’s not always just fish and salt as we’ve long assumed.
So, what exactly are some fish sauce brands adding? Some varieties taste unusually sweet, smell overly strong, or have unnaturally dark coloring—raising the question: is it really authentic fish sauce? And more importantly, how might these additions affect your health?
This article will guide you in spotting the hidden ingredients you should be aware of before choosing your next bottle.
Fish Sauce Isn’t Always What It Seems: The Truth About Hidden Ingredients
Even if a product is labeled “authentic fish sauce,” in some cases, that label refers only to the name—not the content. Many brands add ingredients to enhance flavor without increasing the proportion of real fish, such as:
1. Hidden Sugar
Sugar is often added to fish sauce to soften the flavor or mask the unpleasant smell of poorly fermented fish. Most consumers don’t notice, as the label may list it under names like “refined sugar” or “lactose”. However, added sugars unnecessarily increase calorie intake and may contribute to long-term blood sugar issues.
2. Preservatives
To extend shelf life, many fish sauce products contain preservatives like sodium benzoate or potassium sorbate. Though legally regulated in safe amounts, excessive or accumulated intake from multiple sources may burden the liver and kidneys over time.
3. Monosodium Glutamate (MSG)
Some formulas use MSG to enhance the “umami” flavor. However, individuals sensitive to MSG may experience dizziness, palpitations, or headaches—often without realizing the cause.
A Better Choice: Authentic Fish Sauce Without Hidden Additives
Choosing fish sauce made with only “sea fish + salt”, naturally fermented without added sugar, preservatives, or MSG, is a much healthier long-term option. Not only does it preserve the original taste of real fish sauce, but it also helps you maintain better nutritional control with every meal.
An ideal fish sauce should include just two key ingredients:
- Sea fish – such as anchovies, mackerel, or sardines, providing natural protein and amino acids.
- Sea salt – used for fermentation, food preservation, and a naturally salty flavor.
Trusted Example of Authentic Fish Sauce
Squid Brand Fish Sauce (Pla Muek)
- Made from 100% fresh sea fish and salt
- No preservatives, no MSG, and no sugar
- Naturally fermented for over 18 months for a deep, savory flavor with the true aroma of fermented fish