The black line in shrimp, often called a āvein,ā is actually its digestive tract or intestine. It may contain sand, sediment, or undigested food, but eating it isnāt dangerous if the shrimp is properly cooked, as heat kills any harmful bacteria. The concern is more about texture and flavor; it can be gritty or slightly bitter.
For larger shrimp, itās recommended to remove the vein as itās more visible and likely to contain debris. In smaller shrimp, itās often left intact since the impact is minimal. If youāre preparing delicate dishes like ceviche or aiming for a clean presentation, itās best to remove it.
To remove the vein, make a small cut along the shrimpās back, lift the vein with a knife tip, and rinse the shrimp under cold water.
