I've been ZC for over a year (March 2009) and raw since September 2009. I eat raw steaks, raw ground beef, raw bone marrow and raw fat with NO problems. But I know liver is a great nutritious source, and I wanted to incorporate raw liver into my diet.
Here is what I did and here is what you need:
1 beef liver
I cut the beef liver into 1 ounce strips, roughly, and put in the fridge for eating until it runs out.
I decided to start with 1 ounce and build up a few times a week.
I took one ounce and sliced it VERY thin into swallowable pieces. I put the pieces in a small tupperware container.
I took a slice of raw lemon and squeezed it into the container until lemon juice covered the 5 or 6 pieces of raw liver that equaled the oz.