Have you ever wondered why you should remove the black vein on the back of shrimp?
Removing the black vein on the back of shrimp is a necessary step in the preparation process. Why should this part be removed?
When preparing shrimp, many people often skip the step of removing the black vein on the back. However, chefs and nutritionists agree that it’s an important task to ensure both hygiene and flavor quality.

Why should the black vein be removed?
The black vein on the back of the shrimp is actually part of its digestive system, where the shrimp absorbs and digests food. Although not all shrimp have a clearly visible black vein, this part of the intestine usually becomes visible and is easy to recognize. It runs along the back of the shrimp from head to tail.
Shrimp are aquatic animals, and their environment can contain many pollutants like bacteria, parasites, and harmful substances. Therefore, the digestive system of shrimp inevitably accumulates these impurities. While cooking can kill most bacteria, consuming the intestine still carries the risk of introducing harmful substances into your body. That’s why the black vein should be removed during preparation.
Another reason for removing the black vein is that it can affect the taste of the dish, causing a fishy smell or other unpleasant odors. This part of the intestine may contain undigested digestive enzymes or waste products from the shrimp’s digestive process.
Removing the black vein enhances the flavor of the dish, allowing you to fully enjoy the sweet and natural aroma of the shrimp. Particularly for dishes that require precision, it’s essential to clean the shrimp thoroughly.
How to remove the black vein on the back of shrimp
To effectively remove the black vein, follow these steps:
-
Before starting, wash the shrimp under clean running water to remove any dirt or impurities on the shell. Use your hands or scissors to peel off the outer shell. Be careful when peeling from the head to the tail to avoid damaging the intestine.
-
Use a toothpick or small knife to carefully pull the black vein out of the back of the shrimp. Sometimes, you may need to gently use your hands to pull the intestine out, being careful not to break or tear it.
-
Once the black vein is completely removed, rinse the shrimp again to ensure it is thoroughly cleaned.