Parmigiano-Reggiano is the undisputed king of Italian cheeses — aged for a minimum of 12 months (often 24-36), each wheel concentrates the milk of roughly 550 liters into a crystalline, umami-packed treasure. At 431 kcal per 100 g with an extraordinary 38.5 g of protein, 28.6 g of fat, and just 4.1 g of carbohydrates, Parmesan is one of the most protein-dense foods on earth. Those tiny white crystals that crunch as you eat are tyrosine amino acid clusters — a visual signature of deep aging and enzymatic breakdown that releases intense savory flavors.
Calcium is phenomenal at 1,184 mg per 100 g — 118% of the Daily Value in a single serving — making Parmesan the most calcium-rich common food, surpassing even fortified products. Phosphorus (694 mg, 99% DV) partners with calcium to maintain skeletal density and fuel ATP energy storage. Sodium (1,602 mg) is significant, reflecting the months-long salt-brining process essential to the cheese's preservation and flavor development. Vitamin B12 (1.2 mcg, 50% DV) supports nerve function and DNA synthesis. Vitamin A (207 mcg RAE, 23% DV) maintains vision and immune integrity. Riboflavin (0.332 mg, 26% DV) drives mitochondrial energy production. Zinc (2.75 mg, 25% DV) and selenium (22.5 mcg, 41% DV) support immune defense and antioxidant enzyme systems. Magnesium (44 mg) and potassium (92 mg) contribute to muscle function and electrolyte balance. Vitamin K (1.7 mcg) aids calcium metabolism and blood clotting. Niacin (0.271 mg) supports energy metabolism. Cholesterol is 68 mg. The extended aging process breaks proteins down into free amino acids and short peptides, making Parmesan extremely easy to digest — even many lactose-intolerant individuals can eat it comfortably, as virtually all lactose is consumed during aging.
Always buy Parmesan in wedge form and grate it fresh — pre-grated versions contain cellulose anti-caking powder and lose their aromatic complexity within days. A Microplane produces feathery wisps ideal for finishing pastas, salads, and soups, while the fine holes on a box grater yield the texture needed for pesto, risotto, and gratins. The rind is edible and packed with flavor — simmer it in soups, stews, or minestrone for 30-60 minutes to release a deep umami backbone, then discard the softened remnant. For the classic cacio e pepe technique, finely grate Parmesan (mixed with Pecorino), combine with a ladle of starchy pasta water, and toss vigorously off-heat to form a creamy emulsion. Store wedges wrapped in wax paper inside a loose plastic bag in the refrigerator — they keep for weeks. Parmesan's intense saltiness means a little goes a long way: 15-20 g is usually sufficient to season an entire plate of pasta. Pair it with aged balsamic vinegar, honey, and fresh pear for a dessert course that showcases its granular sweetness.
| Nutrient | Per 100 g | Per serving |
|---|---|---|
| Calories | 431 kcal | 22 kcal |
| Protein | 38.5 g | 1.9 g |
| Fat | 28.6 g | 1.4 g |
| Carbohydrates | 4.1 g | 0.2 g |
| Fiber | 0 g | 0.0 g |
| Sugar | 0.9 g | 0.0 g |
| Water | 29.2 g | 1.5 g |
| Vitamins & Minerals | ||
| Calcium | 1184 mg | 91% |
| Phosphorus | 694 mg | 56% |
| Sodium | 1602 mg | 70% |
| Zinc | 2.75 mg | 25% |
| Vitamin A | 0.207 mg | 23% |
| Vitamin B12 | 1.2 µg | 50% |
| Riboflavin (B2) | 0.332 mg | 26% |
| Niacin (B3) | 0.271 mg | 2% |
| Selenium | 22.5 µg | 41% |
| Cholesterol | 68 mg | 23% |
| Magnesium | 44 mg | 10% |
| Potassium | 92 mg | 2% |
| Vitamin K | 1.7 µg | 1% |
| Serving | Calories | Protein | Fat | Carbohydrates |
|---|---|---|---|---|
| 100 g | 431 kcal | 38.5 g | 28.6 g | 4.1 g |
| 1 tbsp grated (5 g) | 22 kcal | 1.9 g | 1.4 g | 0.2 g |
| 1 piece (28 g) | 121 kcal | 10.8 g | 8.0 g | 1.1 g |
| Food | Calories | Protein | Fat | Carbohydrates |
|---|---|---|---|---|
| Parmesan | 431 kcal | 38.5 g | 28.6 g | 4.1 g |
| Greek Yogurt | 59 kcal | 10.2 g | 0.7 g | 3.6 g |
| Milk (whole) | 61 kcal | 3.2 g | 3.3 g | 4.8 g |
| Kefir | 63 kcal | 3.3 g | 3.5 g | 4.7 g |
| Cottage Cheese | 98 kcal | 11.1 g | 4.3 g | 3.4 g |
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