Wade, The liver is about 22" long x 12" across x 4" thick - in the middle. I wash it thoroughly, and soak it for a spell in salt water. then I lay it on a big cutting board and with a big sharp knife, I slice off 3/8" - 1/2" slabs. I put together enough for two people into a zip-loc bag, and then wrap it in freezer paper. To cook, fry up two onions sliced in oil, set aside, and ay the thawed liver in the pan. Sprinkle with salt and pepper, or Mrs. Dash, and cook in a hot pan for about three minutes per side. Don't overcook it or it will become tough. But it shouldn't be bleeding either.
For the kidneys, cut them up into bite sized chunks, and cook them with a like amount of moose steak in oil in a hot pan, to brown well. Then add the meat and perhaps some beef stock, to a shallow casserole dish, cover with mashed potatoes, and bake. Spice is a personal thing. With some greens of your preference, it's a great meal.