Step 1:
The first step is to remove the sinewy layer on the surface called silver skin.
Step 2:
Slip the tip of a sharp, thin knife under one end of the silver skin.
Step 3:
Grab the loosened end with your fingertips. Then slide the knife away from you just underneath the silver skin.
Step 4:
Continue cutting away from you, with the knife blade angled slightly upwards.
Step 5:
The “cleaned” tenderloins should have hardly any visible silver skin or surface fat.
Step 6:
For great flavor, make a paste of oil, garlic, herbs, lemon zest, and spices. Press it into the meat before grilling.