What happens if you eat the black vein in a shrimp’s tail? | May 4, 2025

When preparing shrimp, it’s common to notice a thin black line running along the top of the back. Often called a “vein,” many cooks take the time to remove it before cooking. But what actually happens if you eat it? Is it dangerous or simply a matter of preference?

What is the black vein in shrimp?

The first thing you should know is that this “vein” isn’t a vein at all. It’s part of the shrimp’s digestive tract, specifically its intestine. It’s a small line that may contain sand, sediment, or undigested food.

Is it dangerous to your health?

No, in most cases, eating the black vein in shrimp doesn’t pose a health risk. If the shrimp has been cooked thoroughly, any potentially harmful bacteria will be killed by the heat. However, the issue is more about texture and flavor: many people prefer to remove it because it can give a gritty or slightly bitter taste.

When is it advisable to remove it?

Large shrimp: In larger shrimp, the vein is more visible and more likely to contain debris, so it’s recommended to remove it.

Small shrimp: In small shrimp, it’s often cooked with the whole thing because removing it can be tedious and its impact is minimal.

Delicate preparations: If you’re looking for a clean presentation or more subtle flavors (such as in ceviche or gourmet dishes), it’s best to remove it.

How to remove the vein from shrimp?
see continuation on next page