NUTRITIONAL LOG

The Truth About Herring

A Deep-Research Journal

Dr. Aria Vance
Dr. Aria Vance Lead Nutrition Data Scientist
Last Reviewed: Jun 3, 2026 • Data Sources: USDA FoodData Central, NutriSnap Volumetric Models

Structured Nutritional Journal

Herring - Nutritional Profile

Functional Impact:

Physical Properties:

Citations & References:

Energy
158 kcal
Protein
17.96 g
79% of calories
Carbohydrates
0 g
Fiber: 0 g Sugars: 0g
Fat
2.1 g
Saturated: 2.508 g Trans: 0g

Calorie Distribution Ratio

Protein (79%)
Carbs (0%)
Fat (21%)

Key Micronutrients

Vitamin D3: 11.17 µg (447 IU) - High Vitamin B12: 13 µg - Extremely High Niacin (B3): 3.99 mg Vitamin B6: 0.435 mg Riboflavin (B2): 0.22 mg Vitamin A: 35 µg RAE Vitamin E (Alpha-tocopherol): 0.77 mg 💎 Selenium: 36.5 µg - High 💎 Phosphorus: 246 mg 💎 Potassium: 384 mg 💎 Sodium: 90 mg (Note: sodium content varies significantly in processed forms like pickled or smoked herring.) 💎 Calcium: 70 mg 💎 Iron: 0.85 mg 💎 Magnesium: 30 mg

Biochemical Impact

Glycemic Index (GI) Extremely low (~0-5). Herring is predominantly a protein and fat source.
Glycemic Load (GL) 0.
Satiety Score High (estimated >150 on a scale where white bread is 100), due to high protein and healthy fat content contributing to prolonged gastric emptying and hormonal signaling.

Physical Volumetrics

Density: Approximately 1.04 g/cm³ (range 1.03-1.06 g/cm³).
Volumetric Contraction/Expansion: Typically 10-15% for baking or pan-frying, primarily due to water loss. Weight loss can be 15-25%.

Citations & References

Field Notes: Dr. Aria Vance

Subject: Herring
Focus: Volumetric expansion/contraction, historical context, tracking challenges.

The Manual Tracking Problem with Herring

Dr. Aria Vance, Lead Nutrition Data Scientist, NutriSnap.

Date: 2024-10-27

Observation: Herring. A true culinary shapeshifter, this small, silvery fish presents an absolute nightmare for precise nutritional tracking using traditional methods. Seriously. My latest deep dive confirms it.

This humble pelagic creature has fueled empires, sustained populations through harsh winters, and even sparked wars. The Hanseatic League built much of its power on salted herring trade. From the raw, delicate Matjes of the Netherlands, barely cured, to the ferociously pungent, fermented Surströmming of Sweden – a dish that practically requires its own postcode for consumption – it’s a dietary chameleon. And that's before we even talk about kippers, bloaters, rollmops, or simply pan-fried fillets. Each preparation, each cultural iteration, introduces a dizzying array of variables. A nutritional black box.

Imagine, if you will, trying to log "herring" into your standard fitness app. Which herring? The brined, sugared, vinegared delight swimming in oil? Its carbohydrate content alone, from the added sugars in pickling solutions, can swing wildly. Or the smoked, salty slab, dehydrated and dense, where every gram of residual moisture impacts the final nutrient concentration? Then there's the serving size. A fillet? A whole fish? Are we talking about a dainty Atlantic specimen or a robust Pacific one? Weight loss during smoking, water uptake during brining – these aren't static values. They're fluid. Unpredictable.

It's a data scientist's purgatory. Measuring herring manually involves weighing the fish before cooking, after cooking, draining off marinades, estimating absorption rates, deciphering vague ingredient lists on pickled jars. Tedious. Inaccurate. Who has the time, let alone the patience, to meticulously measure the specific gravity of the pickling liquid clinging to their rollmops? Or account for the volumetric contraction of a pan-fried fillet without a specialized lab scale in their kitchen? Nobody. This isn't just about 'eyeballing' a portion; it's about forensic culinary analysis, just for a single meal. The typical consumer is simply clicking "herring, prepared" and getting a wildly inaccurate estimate, often off by hundreds of calories due to the added fats, sugars, or the sheer density difference post-processing. A statistical nightmare.

This is precisely why NutriSnap isn't just an improvement; it's a paradigm shift. Our AI, trained on vast, complex datasets including precisely these kinds of variable-density, multi-preparation foods, can perform that forensic visual analysis. A quick photo, and it deciphers the preparation, estimates the precise volume based on visual cues, and accounts for the likely added ingredients with far greater accuracy than any manual logging could ever hope to achieve. It solves the herring problem. A small victory, perhaps, but a vital one in the relentless pursuit of accurate dietary intelligence.

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