Cooked beef organ meats provide roughly 12–30 grams of protein per 100 grams, with liver, heart, and kidney leading for protein density.
If you cook organ cuts right, you get a lot of protein in a small space. This guide compares common beef organs head to head so you can plan servings, hit your targets, and switch cuts without guesswork.
Beef Organ Meats Protein Content By Cut And Serving
Numbers below are for cooked weights unless noted. Protein shifts with moisture loss and trimming, so think in ranges, not absolutes.
| Cut (Cooked) | Protein Per 100 g | Protein Per 3 oz (85 g) |
|---|---|---|
| Liver, braised | ≈ 29.6 g | ≈ 24.2 g |
| Heart, simmered | ≈ 28 g | ≈ 24.2 g |
| Kidney, cooked | ≈ 27.6 g | ≈ 23–25 g* |
| Spleen, braised | ≈ 25 g** | ≈ 21.3 g |
| Tongue, cooked | ≈ 19.4 g | ≈ 16–17 g |
| Sweetbreads, cooked | ≈ 22.8 g | ≈ 19–20 g |
| Tripe (stomach), simmered | ≈ 11.7 g | ≈ 10.3 g |
*Kidney varies by species and cook loss. **Spleen per-100-g figure is estimated from the listed 3-oz serving.
How Cooking Method Changes Protein Numbers
Boiling, braising, or pan-frying drives off water. When water drops, grams of protein per 100 g go up, even if total protein in the piece stays the same. That’s why cooked heart, kidney, and liver cluster near the high-20s per 100 g, while raw entries show lower densities on paper.
Trim also matters. A well-trimmed heart will trend lean and protein-dense. Tongue keeps more fat and water, so its protein per 100 g lands lower even after a long simmer.
Serving Targets You Can Hit
Planning by grams per meal keeps things simple. Pick a cut, weigh the cooked portion, and you’ll be near these ballparks:
- 25–30 g per plate: about 100 g braised liver or kidney; 3–3½ oz cooked heart.
- 18–22 g per plate: 3 oz cooked tongue or sweetbreads; ~90–100 g spleen.
- 10–12 g per plate: 3 oz simmered tripe.
Mix and match across the week. If you like lighter textures, use tongue or tripe on rest days and switch to heart or liver when you want a bigger protein bump in fewer bites.
Protein Quality, Amino Profile, And Satiety
Beef organ proteins supply all essential amino acids. In practical terms, that means you can treat them as a complete source. Liver and heart pack plenty of leucine for muscle protein synthesis, while kidney and spleen bring similar totals per cooked ounce. Tongue is lower by density yet still brings solid amounts when the portion is larger.
Texture and fat affect fullness. Heart and kidney run lean, so they feel lighter but still deliver. Tongue is richer; pair it with crisp vegetables or broth-heavy dishes to balance the plate.
Source-Backed Numbers You Can Trust
For exact entries, cross-check the beef liver braised data and the kidney cooked data, both mapped to USDA FoodData Central. You’ll see liver around 29–30 g protein per 100 g cooked, kidney around 27–28 g per 100 g, and heart in the high-20s depending on trim and method.
Cut-By-Cut Notes And Easy Meal Uses
Liver
High protein by weight and quick to cook. Slice thin, pat dry, and pan-sear fast to keep it tender. Pair with onions and a squeeze of lemon. If you prefer milder flavor, soak in milk and dry fully before it hits the pan.
Heart
Dense, meaty, and lean. Cube for quick skewers or slice into steaks and grill hot. A 3-oz cooked serving lands around 24 g of protein with little waste.
Kidney
Firm bite with a mineral edge. Rinse well, remove the core, and stew with garlic and plenty of herbs. By weight it’s almost as protein-dense as heart and liver.
Spleen
Often sold thin and coiled. Quick braises work best. Expect just over 21 g protein per 3 oz cooked; portions stretch easily in soups and sauces.
Tongue
Silky after a long simmer and a peel. Protein density sits near 19 g per 100 g cooked, so it shines in tacos, thin-sliced sandwiches, or ramen bowls where the portion can be larger.
Sweetbreads
Delicate and springy. Brief poach, chill, press, then pan-crisp. Per 100 g cooked they land in the low-20s for protein, with a mild taste most folks enjoy.
Tripe
Lower protein by weight, yet steady in stews where you eat more volume. Classic bowls like pho or menudo make it easy to reach 15–20 g by going beyond 3 oz.
Beef Organ Meats- Protein Content In Real Kitchens
This is where the idea of beef organ meats- protein content helps at the stove. Weigh cooked food, not raw. Water loss from simmering or frying skews per-100-g charts, so your plate might beat label math by the time it’s done.
Batch cooking pays off. Braise a tongue for the week, grill a tray of heart, and keep a tub of sautéed liver. Rotate cuts and you’ll keep texture changes fresh while hitting steady protein targets.
What Drives Differences Between Cuts
Water content: Liver, heart, and kidney lose moisture fast under heat, which raises protein per 100 g. Tongue holds more fat and water, so you need a slightly larger portion to match totals.
Connective tissue: Heart has lots of working muscle. Long, moist heat breaks it down and tightens your yield per ounce, which keeps the protein count high.
Trim and prep: Removing fat caps and membranes lowers weight without touching protein. That change alone can bump per-100-g figures by a few grams.
Simple Portion Math You Can Use
Grab a scale after cooking. Then use this quick table to sketch meals without spreadsheets.
| Cooked Portion | Estimated Protein (g) | Cuts That Fit |
|---|---|---|
| 3 oz (85 g) | ~24–30 | Liver, heart, kidney |
| 4 oz (113 g) | ~22–24 | Tongue, sweetbreads |
| 6 oz (170 g) | ~18–22 | Tongue, sweetbreads, spleen |
| 8 oz (227 g) | ~24–26 | Tripe stews and soups |
| 1 cup diced (140 g) | ~26–30 | Kidney or heart in stew |
Buying, Storing, And Food Safety
Buy fresh from a steady butcher when you can. Look for a clean smell, firm texture, and bright, even color. Keep chilled and cook soon after purchase. If you freeze, use airtight bags and label the date. Thaw in the fridge, not on the counter.
Simmer tongue and tripe until tender before slicing. For liver and heart, brief high heat keeps them soft. Always cook to a safe internal temperature and avoid cross-contamination on cutting boards.
Budget Swaps That Keep Protein High
Heart is often the best value for protein per dollar. Skip pricey steaks and grill heart strips for tacos or stir-fry. When liver is abundant, batch sear and portion for toast, pasta, or grain bowls. Tripe and tongue turn into many meals once tender, which stretches grams across several days.
Smart Pairings For A Balanced Plate
Lean organs like heart and kidney pair well with olive oil, potatoes, or rice. Rich cuts like tongue benefit from fresh toppings and acid—pickled onions, salsa verde, or lemon. Add crunchy greens for texture contrast and a teaspoon of salt in the cooking water for steady seasoning.
References And Data Notes
Figures in the first table draw from lab-based entries that map to USDA SR Legacy via MyFoodData: liver braised ~29.6 g protein/100 g; heart around 28 g/100 g with roughly 24 g per 3-oz cooked serving; kidney ~27.6 g/100 g; spleen ~21.3 g per 3 oz; tongue ~19.4 g/100 g; sweetbreads ~22.8 g/100 g; tripe ~11.7 g/100 g.
Entries vary by cut size, age, salt, and cooking time. When precision matters, check the exact item in a database and weigh the finished portion you serve. If you’re building tracking sheets, weaving in beef organ meats- protein content in this consistent format makes future updates fast.