By Beleaev Family | London Caviar Specialists | beleaev.com
People ask us constantly: is caviar actually nutritious, or is it just expensive salt and fish eggs? Fair question. The answer is that caviar has one of the most impressive nutritional profiles of any whole food. Period.
This article gives you the hard numbers. Every vitamin, mineral and macronutrient, with comparisons to foods you already know. No vague claims, just data.
Key Takeaways
- A 30g serving of caviar contains roughly 75 calories, 7g protein, 5g fat and zero carbohydrates.
- Omega-3 content (EPA + DHA) exceeds salmon by a factor of three to four on a gram-for-gram basis.
- Vitamin B12 in a single serving delivers over 400% of your daily requirement.
- Caviar is a complete protein source with all nine essential amino acids.
What's in a Standard Serving of Caviar?
Let's start with the basics. A typical serving of caviar is 30g (roughly one ounce, or about two tablespoons). What you're getting:
Macronutrient Breakdown (per 30g serving)
| Nutrient | Amount | Notes |
|---|---|---|
| Calories | 75 kcal | Lower than most cheeses |
| Protein | 7.5g | Complete, all essential amino acids |
| Total Fat | 5.0g | Predominantly unsaturated |
| Saturated Fat | 1.1g | Modest |
| Omega-3 (EPA + DHA) | 1,000-1,200mg | Phospholipid form |
| Carbohydrates | 0g | Zero |
| Cholesterol | 94mg | See discussion below |
| Sodium | 240mg | Malossol-cured; 10% of daily limit |
The calorie count surprises most people. At 250 calories per 100g, caviar sits well below cheddar cheese (403 kcal/100g), peanut butter (588 kcal/100g) or dark chocolate (546 kcal/100g). It's a calorie-efficient way to load up on micronutrients.
How Does Caviar's Omega-3 Content Compare?
This is where caviar stands out. The USDA FoodData Central database (reference: sturgeon roe, black and red caviar) shows that caviar delivers omega-3 at a concentration most other foods can't touch.
Omega-3 Content Comparison (per 100g)
| Food | EPA + DHA Combined | Form |
|---|---|---|
| Sturgeon caviar | 3,500-4,000mg | Phospholipid |
| Atlantic salmon (farmed) | 1,200-1,800mg | Triglyceride |
| Mackerel | 1,000-1,400mg | Triglyceride |
| Sardines | 900-1,100mg | Triglyceride |
| Tuna (canned) | 300-500mg | Triglyceride |
| Fish oil supplement (1 capsule) | 300-500mg | Triglyceride |
| Walnuts (ALA only) | 0mg EPA/DHA | N/A |
The phospholipid form deserves attention. Most dietary omega-3 comes bound to triglycerides. In caviar, a significant portion is bound to phospholipids instead. Research published in Lipids in Health and Disease (Schuchardt et al., 2011) suggests that phospholipid-bound omega-3s may have superior bioavailability, meaning your body absorbs and uses them more efficiently. Krill oil has received attention for this same property, but caviar was there first.
Vitamin and Mineral Profile: The Full Picture
Micronutrient Content (per 30g serving)
| Vitamin/Mineral | Amount | % Daily Value | Key Function |
|---|---|---|---|
| Vitamin B12 | 6-8mcg | 400-530% | Nerve function, red blood cells |
| Vitamin A (retinol) | 90mcg | 10-12% | Vision, immune function |
| Vitamin D3 | 2-3mcg | 20-30% | Bone health, immune support |
| Vitamin E | 0.5mg | 3-4% | Antioxidant |
| Selenium | 18-20mcg | 30-36% | Thyroid, antioxidant defence |
| Iron (heme) | ~1mg | 6-8% | Oxygen transport |
| Phosphorus | 90mg | 13% | Bone and cell structure |
| Magnesium | 90mg | 22% | Muscle and nerve function |
| Zinc | 0.3mg | 3% | Immune function |
| Potassium | 55mg | 2% | Fluid balance |
The B12 figure is extraordinary. You'd need to eat 200g of beef steak or drink a litre of milk to match the B12 in a single 30g serving of caviar. According to the NIH Office of Dietary Supplements, B12 deficiency can cause fatigue, neurological problems and megaloblastic anaemia. Caviar is the single most concentrated natural food source of this vitamin.
The magnesium content is also notable. At 300mg per 100g, caviar is a richer source than dark chocolate (228mg/100g) or almonds (268mg/100g) according to USDA data.
What About Cholesterol?
A 30g serving contains about 94mg of dietary cholesterol. For years, this would have raised red flags. Not anymore.
The 2020 Dietary Guidelines for Americans removed the previous 300mg/day cholesterol cap, acknowledging that for most people, dietary cholesterol has a relatively small impact on blood cholesterol levels. The NHS takes a similar position, focusing more on saturated fat intake than dietary cholesterol.
The omega-3 fatty acids in caviar may help maintain healthy triglyceride levels as part of a balanced diet. A 2018 review in the European Journal of Clinical Nutrition found that marine omega-3 consumption was consistently associated with improved lipid profiles.
So the cholesterol in caviar comes packaged with the very nutrients that help your body manage it. Context matters.
How Does Caviar Compare to Other Protein Sources?
Protein Comparison (per 100g)
| Food | Protein | Calories | B12 (mcg) | Omega-3 (mg) |
|---|---|---|---|---|
| Sturgeon caviar | 25g | 250 | 20-27 | 3,500-4,000 |
| Chicken breast | 31g | 165 | 0.3 | Trace |
| Atlantic salmon | 20g | 208 | 3.2 | 1,200-1,800 |
| Whole eggs | 13g | 155 | 1.1 | 74 |
| Greek yoghurt | 10g | 97 | 0.75 | 0 |
| Tofu (firm) | 8g | 76 | 0 | 0 |
Chicken breast wins on raw protein volume per calorie. But look at the micronutrient columns. Caviar delivers protein alongside a payload of omega-3 and B12 that chicken simply cannot match. If you're evaluating foods by total nutritional value rather than single macronutrients, caviar is in a league of its own.
Caviar Calories: A Practical Perspective
Let's be realistic about how caviar fits into a daily diet. Nobody eats 100g of caviar in one go (well, almost nobody). A 30g serving at 75 calories is nutritionally significant but calorically modest.
To put 75 calories in perspective:
- One medium banana: 105 calories
- A small latte: 120 calories
- A tablespoon of olive oil: 119 calories
- A handful of almonds (23 nuts): 164 calories
You could eat caviar twice a week and barely notice it on a calorie tracker. What you would notice is the cumulative benefit of consistent omega-3, B12 and selenium intake.
Does Cooking Affect Caviar's Nutrition?
Short answer: don't cook caviar. It's eaten cold for good reason. Heat degrades the delicate omega-3 fatty acids, denatures proteins and destroys the texture that defines quality caviar.
That said, if caviar is incorporated into a warm dish (placed on top of a just-cooked blini, for example), the brief exposure to gentle heat doesn't significantly reduce nutritional value. The problems start with sustained high temperatures: frying, baking or boiling would damage the omega-3 content substantially.
Further Reading
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FAQ
How many calories are in a teaspoon of caviar?
Roughly 13 to 15 calories. A teaspoon holds about 5g of caviar. At 250 kcal per 100g, a teaspoon is a negligible caloric contribution. The micronutrient density in that teaspoon, however, is remarkable: approximately 200mg of omega-3 and over 1mcg of B12.
Is caviar high in sodium?
Malossol caviar contains about 800mg of sodium per 100g, or 240mg per standard 30g serving. That's roughly 10% of the recommended daily maximum of 2,300mg (NHS guideline: 6g salt = 2,400mg sodium). Comparable to a slice of bread or a small serving of soup. If you're on a strict sodium restriction, account for it, but for most people it's well within normal dietary range.
Is caviar suitable for a keto or low-carb diet?
It's almost perfect for it. Zero carbohydrates, high in healthy fats, moderate protein. Caviar ticks every box for ketogenic eating. The high omega-3 content is a particular bonus, as many keto dieters struggle to get sufficient marine omega-3s.
The numbers speak for themselves. Caviar isn't just a luxury; it's one of the most nutrient-dense foods available. Omega-3, B12, selenium, complete protein, vitamin D, all in a 75-calorie serving. Hard to argue with that.
Explore our responsibly farmed caviar at Beleaev and let the nutrition speak for itself.
Explore the full caviar collection at Beleaev for next-day UK delivery.
Beleaev is a London-based caviar and gourmet house specialising in responsibly farmed Beluga, Oscietra, Sevruga, and Kaluga caviar. Next-day delivery across the United Kingdom.
This article is for general information only and is not medical or dietary advice. Nutrient figures are approximate and vary by product. If you have specific health concerns, please consult a qualified professional.
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