Figure 2.
Slitting the back of the shell makes it easy to devein the shrimp as well. Except when the vein is especially dark and thick, we found no benefit to deveining in our testing. If you choose to devein shrimp, slit open the back of the shell (figure 1). Invariably you will cut a little into the meat and expose the vein as you do this. Use the tip of the scissors to lift up the vein, and then grab it with your fingers and discard.