Beef, shoulder top blade steak, boneless, separable lean only, trimmed to 0" fat, all grades, cooked, grilled

Beef shoulder top blade steak is a cut taken from the upper part of the shoulder (the chuck primal) of the cattle, often known in the retail market as the flat iron steak due to its distinctive rectangular shape. The shoulder top blade muscle (infraspinatus) is a well‑used muscle in the animal, giving it rich flavor. Historically, this cut was underutilized compared to premium cuts like ribeye or sirloin due to its connective tissue profile. However, improvements in butchery techniques, notably the removal of the central connective strip, created the flat iron steak in the early 2000s, which offered a tender, affordable alternative. The beef itself is from _Bos taurus_, raised in various production systems including grass‑fed and grain‑fed systems in the United States, Australia, Argentina, and elsewhere. Different grades of beef—Prime, Choice, and Select—reflect marbling levels, tenderness, and flavor. Prime cuts have the most marbling and yield slightly more fat but more rich flavor, while Select cuts are leaner but still rich in protein. The lean only trim of the top blade steak removes excess external fat, concentrating nutrients per gram of edible portion. This cut is versatile: it can be grilled, broiled, pan‑seared, or charred, with each method influencing texture and flavor. Cooking science emphasizes that moderate heat and avoiding overcooking will maintain juiciness and prevent toughness. Culturally, this steak cut has become popular in both home kitchens and restaurants as a cost‑effective yet flavorful option for steaks and fajitas. Its popularity has grown due to consumer demand for leaner red meat options that still deliver robust taste and satisfy dietary preferences. Culinary schools and butchers often recommend this cut as a beginner‑friendly steak that teaches proper resting, seasoning, and heat‑control techniques. Nutrition professionals also note that lean steaks like this one deliver essential amino acids and bioavailable micronutrients like heme iron and zinc, which are often harder to obtain in adequate amounts from plant sources alone. The shoulder top blade steak represents a bridge between traditional, flavorful beef cuts and modern nutritional demands for lean protein sources. With appropriate cooking methods, it combines the sensory appeal of red meat with a macro‑nutrient profile that supports muscle protein synthesis and overall nutritional adequacy in varied eating patterns.

The nutrition profile of beef, shoulder top blade steak (lean only, cooked), reveals it as an excellent protein source with a comparatively modest fat contribution when trimmed of external fat. Per 100 g cooked, this cut delivers 28.15 g of protein, which supplies all nine essential amino acids necessary for muscle repair, immune function, and metabolic regulation. The protein is rich in branched‑chain amino acids such as leucine, isoleucine, and valine, which are key drivers of muscle protein synthesis. Lean beef compares favorably with other animal proteins like chicken breast or pork loin in terms of amino acid quality. In the same serving size, it provides 9.23 g of total fat, including ~3.77 g of saturated fat and ~0.37 g of trans fats (naturally occurring ruminant trans fats). The saturated fat content, while present, is lower than many higher‑marbled cuts such as ribeye, making it a leaner steak option. The fat includes beneficial monounsaturated fats (oleic acid) that may support lipid profiles when substituted for dietary saturated fats in balanced eating patterns. Micronutrient analysis shows beef shoulder top blade steak as a significant source of iron (3.14 mg)—particularly bioavailable heme iron, which supports oxygen transport and energy metabolism. It also provides zinc (9.82 mg), which is critical for immune function, DNA synthesis, and wound healing, and selenium (31.4 µg), which functions as an antioxidant cofactor. Vitamin B12 (5.18 µg) in this steak covers more than 200 % of the daily requirement for many adults and plays a vital role in red blood cell formation and neurological health. Other B vitamins like niacin, riboflavin, and vitamin B6 support energy metabolism. Compared to similar red meats such as top sirloin or flank steak, the shoulder top blade steak typically has comparable protein levels but may vary slightly in fat depending on trimming and grade. For example, a lean sirloin steak may have marginally lower total fat, while a marbled ribeye will contain a higher fat proportion. This positions the shoulder top blade steak as a nutrient‑dense choice when lean cuts are prioritized. Dietary cholesterol (95 mg per 100 g cooked) should be considered in the context of overall diet. While dietary cholesterol was once viewed as a primary driver of blood cholesterol, current evidence emphasizes saturated and trans fats as more influential on blood lipid levels. Therefore, when consumed in balance with whole grains, fruits, and vegetables, lean beef can fit into healthful dietary patterns such as those recommended by the Dietary Guidelines for Americans 2020–2025. The absence of carbohydrates and dietary fiber reflects its identity as a pure protein and fat source. This makes it suitable for low‑carbohydrate eating plans but necessitates dietary fiber intake from vegetables, legumes, and whole grains for digestive health and glycemic control.

Beef shoulder top blade steak, when consumed as part of a balanced diet, offers several evidence‑based health benefits grounded in its nutrient composition and high‑quality protein content: 1. Supports Muscle Protein Synthesis and Maintenance: The high protein content provides all essential amino acids, particularly leucine, which is strongly linked with muscle protein synthesis. Adequate protein intake is critical for maintaining lean body mass, especially among older adults and athletes. A systematic review noted positive effects of beef protein and amino acids on markers of physical function in adults over 50, suggesting benefit for skeletal muscle and wellbeing, although more research is needed specifically on whole beef consumption. (Hawley et al., systematic review) 2. Improves Iron Status: Beef is a rich source of heme iron, which is more readily absorbed than non‑heme iron found in plant foods. Regular consumption of lean red meat can help prevent iron deficiency anemia, particularly in populations at higher risk such as premenopausal women and endurance athletes. The heme iron in lean beef enhances the total iron absorbed from mixed meals due to the so‑called ‘meat factor.’ Healthline notes that heme iron significantly improves iron status when included in balanced diets. 3. Supports Immune Function: With substantial levels of zinc and selenium, this steak provides micronutrients essential for immune cell function, antioxidant defense, and thyroid hormone metabolism. Zinc deficiency impairs cellular immunity, while selenium contributes to glutathione peroxidase activity, reducing oxidative stress. 4. Energy Metabolism and Neurological Health: Vitamin B12 and B6, both abundant in this steak, support red blood cell formation and neurological function, including cognitive processes. B12 deficiency can lead to megaloblastic anemia and neurological symptoms, which is why animal‑derived foods rich in B12 are especially important for older adults and individuals with limited dietary variety. 5. Satiety and Weight Management: High‑protein foods like lean beef increase satiety and can support calorie control and weight management when included in balanced meals. Protein’s thermic effect is higher than that of fats and carbohydrates, meaning more energy is expended during digestion. 6. Metabolic Health: While some observational research links high red meat intake with chronic disease risk, controlled trials of lean, unprocessed beef show neutral effects on many cardiometabolic risk factors. A 2024 meta‑analysis of RCTs found that beef intake did not significantly affect blood pressure or most lipid fractions, though LDL cholesterol increased modestly (~2.7 mg/dL) in some comparisons. (ScienceDirect) It’s important to interpret evidence with nuance. Observational studies historically reported associations between red meat and chronic disease outcomes, but these may be confounded by overall dietary patterns and lifestyle factors. Reviews suggest that benefits of lean, unprocessed beef in nutrient adequacy and muscle health are more consistent, while associations with chronic disease require careful dietary context.

Despite its nutritional benefits, beef shoulder top blade steak has potential risks and considerations that certain individuals should keep in mind: 1. Saturated Fat and Cardiometabolic Risk: Although lean trimmed beef has a moderate fat content, it still contributes saturated fat, which can raise LDL cholesterol in some individuals when consumed in excess. While some RCT meta‑analyses show minimal impact on overall blood lipids, modest increases in LDL have been observed in diets higher in beef compared to low‑beef diets. Individuals with familial hypercholesterolemia or existing cardiovascular disease should monitor saturated fat intake and balance it with unsaturated fats from sources like nuts, seeds, and fatty fish. (ScienceDirect) 2. Red Meat and Cancer Risk (Observational Evidence): Large observational studies and meta‑analyses have associated high red meat intake, especially processed meats, with increased risk of colorectal cancer. Mechanisms proposed but not conclusively proven include formation of N‑nitroso compounds, heme iron catalysis of oxidative stress, and cooking by‑products such as heterocyclic amines when charred at high heat. These findings are primarily from observational cohorts and do not establish causality, yet they inform guidelines that recommend moderation of red meat consumption. (MDPI) 3. Cooking Byproducts: High‑heat cooking (grilling to well‑done) can generate heterocyclic amines (HCAs) and polycyclic aromatic hydrocarbons (PAHs), compounds linked with cellular damage and cancer risk in animal models. Reducing cooking time, using lower heat, and avoiding charring mitigates HCA formation. (维基百科) 4. Food Safety: Raw and undercooked beef carries risks of foodborne pathogens. Although intact steaks pose lower risk than ground beef, proper handling and cooking to safe internal temperatures (145°F/63°C with rest) are essential to minimize pathogens like _E. coli_ and _Salmonella_. See FDA food safety guidance for meat products. 5. Allergic Reactions: Red meat allergy (alpha‑gal syndrome) is a rare but documented condition triggered by tick bites that can cause delayed allergic reactions to mammalian meat. Individuals with this condition must avoid beef and related foods. 6. Purines and Gout: Beef contains purines that metabolize to uric acid. People with gout or hyperuricemia may need to moderate intake to manage symptoms and uric acid levels. These risks underscore the importance of dietary context, portion control, diverse protein sources, and cooking techniques that prioritize nutrient preservation and minimize harmful by‑products.

Source: USDA FoodData Central (FDC ID: 168654)