Top 5 Important Things to Consider When Buying Cát Hải Fish Sauce - Hai Phong

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Ngày cập nhật gần nhất: 15/4/2026

Content

1. Understanding the Protein Content of Fish Sauce

2. Using Fish Sauce in a Healthy and Practical Way

3. How to Identify Cát Hải Fish Sauce by Its Packaging

4. Evaluating Product Quality Through Sensory Perception

5. Cát Hải Fish Sauce Has a Higher Salt Content Than Industrial Fish Sauces

1. Understanding the Protein Content of Fish Sauce

The protein content is one of the most significant factors when purchasing fish sauce, though not everyone fully grasps its meaning. This is measured by the total nitrogen (N) present in a liter of sauce. The first extraction (called fish sauce extract or 'mắm nhĩ') contains 25-28 degrees of protein (25-28g of nitrogen per liter), with each subsequent batch having a reduced protein level.

For traditional production methods like Cát Hải, where fish is the sole ingredient and no additional protein sources are added, higher protein content leads to better taste. However, the actual amount of protein consumed from traditional fish sauce is very small (less than 1g per person per day), so it cannot be considered a significant source of protein. Instead, the protein content serves as an indicator of the sauce's flavor quality.

According to the Vietnamese Standard for Fish Sauce (TCVN 5107-2003), traditional fish sauce is classified as follows:

Protein content > 30No is considered exceptional
Protein content > 25No is considered premium
Protein content > 15No is considered first grade
Protein content > 10No is considered second grade

This standard applies only to traditionally produced fish sauces, including Cát Hải. Be aware that with industrial fish sauces on the market today, a better taste does not necessarily mean higher protein content, as many manufacturers may increase protein levels by adding synthetic substances such as urea, amino acids, or melamine.

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2. Using Fish Sauce in a Healthy and Practical Way

Cát Hải fish sauce, like most traditional fish sauces, has a high salt content due to the high concentration of dissolved salt. Experts strongly advise consumers not to overuse this condiment to avoid the risk of high blood pressure and kidney-related issues.

It is also highly recommended that children under the age of 1 should not consume fish sauce, as its high salt content can be extremely harmful to their delicate kidneys.

For better health and to suit your taste, it’s ideal to buy traditional fish sauce and dilute it with boiled and cooled water, or use fresh lime, lemon, or regular sugar to reduce its saltiness. Avoid using artificial sweeteners or additives. Be mindful that you should only dilute fish sauce with water for each meal, as fish sauce sealed in its bottle is safe for long-term storage, but once it comes into contact with water, it can spoil quickly.

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3. How to Identify Cát Hải Fish Sauce by Its Packaging

Cát Hải fish sauce is the exclusive trademark of Cát Hải Seafood Processing and Service Joint Stock Company, protected across Vietnam. Therefore, when purchasing this product, make sure to look for the exact name "Cát Hải Fish Sauce" on the label, which should also feature a genuine anti-counterfeit seal with the company's brand to avoid confusion with other brands.

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4. Evaluating Product Quality Through Sensory Perception

Using your senses, you can easily evaluate and select the best fish sauce. Turn the bottle upside down and place it under light. If the fish sauce is clear, it’s a good sign; if you see sediment, avoid buying it. When poured into a bowl, traditional fish sauce should have a distinct, pleasant aroma, free from any off-putting smells like pungency or sourness. After pouring, let it sit for 3-5 minutes to fully appreciate its aroma and flavor. Cát Hải fish sauce should have a rich, strong saltiness that doesn’t feel harsh at first, followed by a subtle sweetness that lingers in your throat. If the sauce tastes overly sharp and unpleasant, it likely has a low nitrogen content or contains many additives, making it inferior in quality. Additionally, you can pour a small amount of fish sauce on your hands. Genuine Cát Hải fish sauce will leave a lingering scent that doesn’t wash off easily, even after several washes. This type of fish sauce has a long shelf life, maintaining its quality and aroma for years without spoiling or deteriorating.

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5. Cát Hải Fish Sauce Has a Higher Salt Content Than Industrial Fish Sauces

Salt content is a key factor in distinguishing traditional fish sauce from industrial versions. In the traditional method, Cát Hải fish sauce is made with salt for both processing and preservation, resulting in a salt content of 245 - 290g per liter of product, as per TCVN 5107 - 2003 standards. If the salt content drops below this range, the sauce will spoil within 7-10 days. This is why industrial fish sauces, which have a milder taste, often require additional preservatives to maintain their shelf life.

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Frequently Asked Questions

What is the protein content in traditional fish sauce?

Traditional fish sauce, especially Cát Hải, contains protein levels ranging from 25-28g of nitrogen per liter in the first extraction. This protein content indicates the sauce's flavor quality but doesn't significantly contribute to daily protein intake.

How can you reduce the saltiness of fish sauce for better health?

To reduce the saltiness of fish sauce, dilute it with boiled and cooled water, or add fresh lime, lemon, or regular sugar. Avoid artificial sweeteners and additives for a healthier option.

How can you identify genuine Cát Hải fish sauce by its packaging?

Genuine Cát Hải fish sauce features the exact name on its label and a protective anti-counterfeit seal. Always check these details to ensure the product is authentic and avoid confusion with other brands.

What should you look for when evaluating the quality of fish sauce?

To evaluate the quality of fish sauce, check for clarity under light, avoid bottles with sediment, and assess the aroma. High-quality fish sauce should have a rich, balanced saltiness with a subtle sweetness.

Why does Cát Hải fish sauce have a higher salt content than industrial fish sauces?

Cát Hải fish sauce uses salt for both processing and preservation, leading to a higher salt content of 245-290g per liter. Industrial versions often use preservatives and have milder salt levels to maintain shelf life.

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