sometimes slightly greenish
Shrimp living near sandy or muddy bottoms often have a more visible digestive tract. This is why some have a thicker line than others.
Can you eat shrimp without removing this line?
Good news: in the vast majority of cases, eating a shrimp with this line is perfectly safe when it is thoroughly cooked.
However, many cooks—amateurs and professionals alike—prefer to remove it for several practical reasons.
First, for taste. The contents of the digestive tract can sometimes impart a slight bitterness or a slightly gritty sensation in the mouth. This is usually subtle, but it can be noticeable, especially with larger shrimp.
Second, for presentation. A perfectly cleaned shrimp simply looks more appetizing on the plate, especially when served at a social gathering.
Finally, some people with sensitive digestion prefer to avoid this part. Removing it allows them to enjoy the dish without worry.
When is it absolutely necessary to remove the dark vein?
In certain cases, it is particularly recommended to remove it:
when the shrimp are large or very large
when the vein is thick and clearly visible
when you are looking for a more pronounced flavor
when preparing a dish where the shrimp are the star ingredient
For very small shrimp, some people choose to leave it on because it is very thin. But removing it is generally the best practice in the kitchen.
