Drain off the blood from the container you get the chicken liver in. Briefly rinse with cold water. There isn't really much cleaning to be done when it comes to chicken liver
Take one liver out and inspect to see if there are any sinew or veins. Simply use kitchen shears or a sharp knife to trim those off. You can also trim off excess fat. The liver is pretty much ready to be used at this point
You can leave them whole or cut them into smaller pieces to suit the recipe you plan to use
Pressure cook chicken liver:
Pour 1 cup of water into the inner pot of Instant Pot. Put the cleaned liver pieces, ginger, and peppercorns into the inner pot. Close the lid and turn the steam release valve to "sealing". Press "pressure cooker" and make sure it's on "high pressure". Set the timer to 5 minutes and then wait 5 minutes to release pressure
Carefully unlock the lids. Use a tong or slotted spoon to remove the cooked liver pieces from the pot. At this point, they are coated in scums (because blood comes out and coagulate as you cook the liver). Rinse them with cold fresh running water. The liver pieces are ready to be used in other recipes or consumed as is
I usually strain the cooking broth and use them in cooking. Since we are cooking it with ginger and peppercorns, the broth doesn't smell weird. It is actually naturally sweet too