Organ Meat Preparation: Liver, Heart, Kidneys, and Tongue

Why Organs Matter Nutritionally

The nutritional profile of organ meats compared to muscle meat is not close. Gram for gram, deer liver contains more vitamin A, B12, iron, copper, zinc, folate, and CoQ10 than any muscle cut from the same animal.

Before refrigeration and grocery stores, organ meats were consumed first — not because people were hungry enough to eat anything, but because experienced hunters and indigenous peoples understood that the organs represent the most concentrated nutrition in the animal. A diet of muscle meat alone leads to a condition called "rabbit starvation" (protein poisoning) — too much lean protein with inadequate fat and micronutrients. Organs and fat resolve this.

In a grid-down scenario where you have harvested an animal:

• Eat the organs first — they deteriorate faster than muscle and provide the highest nutritional return
• Do not discard the fat — fat around the kidneys (suet) is the purest fat on the animal
• Collect the tongue — many hunters discard it, but it is one of the best-flavored cuts

Collecting and Handling Organs in the Field

During Field Dressing

When you open the body cavity:

1. Liver: Large, dark reddish-brown lobe attached to the diaphragm and under the ribcage. Remove by cutting the ligament attachments and pulling it free. Place in a clean bag or directly on clean grass.

2. Heart: Found in the chest cavity, enclosed in the pericardial sac. Reach in and remove the sac, then cut the major blood vessels at the top of the heart. The heart comes free with the blood vessels attached — trim these after recovery.

3. Kidneys: Found in the abdominal cavity, embedded in white fat (suet) near the spine. They are a paired organ — two bean-shaped red organs in a surrounding pad of white fat. Remove the fat pad separately (excellent quality cooking fat). The kidneys detach from the fat pad easily.

4. Tongue: Must be removed later, after the jaw is accessible. A saw or strong knife cuts through the lower jaw at the chin; the tongue is then pulled forward and the base cut free. Alternatively, remove the entire head and process the tongue at camp.

Field Care

Organs begin deteriorating faster than muscle. In warm weather (above 50°F):

• Place in a plastic bag with the air squeezed out
• Keep cool by submerging the bag in a cold stream or packing with ice/snow
• Process within 4-6 hours in warm conditions

In cold weather (below 40°F), organs keep 24-36 hours without refrigeration.

The blood rinse: Rinse the liver, heart, and kidneys briefly in cold water after recovery. Remove visible blood clots. The rinse removes surface contamination and slows deterioration.

Preparing the Liver

Pre-Preparation

1. Remove the gallbladder (a small green sac attached to the underside of the liver) by cutting around it without puncturing it. Bile from the gallbladder makes the surrounding meat extremely bitter.
2. Trim away any connective tissue, visible bile ducts, or discolored areas.
3. Slice the liver into 1/2 inch sections.
4. Soak slices in cold milk or cold salted water (1 tbsp salt per quart) for 1-4 hours.
5. Remove, drain, and pat thoroughly dry.

Cooking Liver

Pan-fry method (best results):

1. Heat a heavy skillet over high heat until very hot
2. Add fat (lard, tallow, butter, or cooking oil)
3. Season the dry liver slices with salt and black pepper
4. Sear for 2-3 minutes per side — you want a browned crust with an interior that is just barely pink (160°F internal)
5. Remove immediately — residual heat continues cooking after removal

What ruins liver: Overcooking. Liver goes from good to tough and bitter in about 90 seconds past its correct internal temperature. Cook it fast and hot, pull it before you think it's done.

Wild onion addition: Add sliced wild onion to the fat before adding the liver. The caramelized onion moderates the liver's flavor and pairs traditionally with it.

Nutritional Profile of Deer Liver (per 3.5 oz / 100g)

| Nutrient | Amount | % Daily Value | |----------|--------|---------------| | Calories | ~120 | — | | Protein | ~20g | 40% | | Vitamin A | ~22,000 IU | 440% | | Vitamin B12 | ~13mcg | 220% | | Iron | ~6mg | 33% | | Copper | ~7mg | 350% | | Folate | ~340mcg | 85% | | Zinc | ~4mg | 36% |

Do not eat more than 4 oz of wild game liver per day from any single organ — vitamin A (retinol) toxicity is a real risk with regular high-dose consumption. One or two meals of liver per week is appropriate; liver as a daily staple is not.

Preparing the Heart

The heart is one of the most accessible, least challenging organs to prepare. It tastes like a mildly flavorful, dense muscle meat — because that is exactly what it is.

Pre-Preparation

1. Trim the external fat and connective tissue from the outside
2. Cut the heart open (slice from top to bottom, opening it like a book)
3. Remove any blood clots from the interior chambers
4. Trim out the valves and internal membranes — pull the connective tissue free
5. Rinse under cold water

Cooking Heart

Camp method — sliced and seared:

Cut the cleaned heart into 1/2 inch slices across the grain. Season with salt. Sear in a hot pan or directly on a flat rock over the fire for 3-4 minutes per side until just cooked through. The heart has more connective tissue than typical muscle — it can handle slightly longer cooking without becoming dry.

Whole heart braise (for large elk or moose heart):

A large heart (elk or moose) is better braised than seared due to size:

1. Brown the exterior in hot fat
2. Add water, wild onion, and any vegetables available
3. Simmer covered 2-3 hours until tender
4. Slice and serve

Heart meat is rich in CoQ10 (coenzyme Q10), a nutrient important for cellular energy production. It also has one of the highest iron contents of any cut from a deer or elk.

Preparing the Kidneys

Pre-Preparation (Critical Step)

The kidneys require more preparation than liver or heart to achieve good flavor.

1. Remove each kidney from its surrounding fat pad
2. Peel off the outer white membrane (it slides off with a fingernail start)
3. Split the kidney in half lengthwise
4. Cut out the white internal core (the renal pelvis) — this is the source of the characteristic strong kidney flavor
5. Soak in cold water for 30-60 minutes, changing water once
6. Pat dry

Cooking Kidneys

Skillet method:

Slice pre-prepped kidney halves into 1/4-inch pieces. Season with salt. Cook in a hot, oiled skillet for 2-3 minutes per side — no more. Kidneys, like liver, become rubbery when overcooked.

Wild game kidneys prepared this way are mild and slightly gamey — much milder than domestic beef kidneys from feedlot cattle.

Kidney suet: The fat surrounding the kidneys is the highest-quality fat on the animal — firm, white, and clean. Render this fat by cutting it into small pieces and heating slowly in a pan until the pure fat melts and can be strained from the membrane solids. Kidney suet (tallow) keeps for months without refrigeration in a cool location.

Preparing the Tongue

Pre-Preparation

1. Rinse the tongue in cold water
2. Bring a pot of water to boil with salt and any aromatics (wild onion, herbs, bay leaf)
3. Add the whole tongue
4. Simmer covered: 2-3 hours for deer tongue, 4-6 hours for elk/moose tongue
5. Tongue is done when a sharp knife inserts easily and there is no resistance
6. Remove from liquid while hot
7. The outer skin (a rough, gray layer) peels off easily while hot — grip with a cloth and pull. If it resists, simmer another 30 minutes.

Using Cooked Tongue

Hot: Slice into 1/4-inch rounds and eat immediately. Season simply — the rich flavor needs nothing else.

Cold: Cool the peeled tongue completely, then slice thin. One of the best sandwich/flatbread preparations from wild game.

Chopped: Dice fine and mix with rendered fat and any available seasoning for a high-calorie camp spread.

Tongue is very fatty compared to most muscle cuts — a deer tongue is approximately 30% fat by weight. This makes it calorie-dense and particularly valuable in cold weather when fat is a priority.