Cereals & Grains (Breads)
Plain Bagels
This food is best grown in multi-storey aeroponic buildings.
1.1 Overview & Structure
Plain bagels are a dense, chewy bread product made from high-protein refined wheat flour that has been boiled and then baked. The physical build is defined by a tight network of gluten, which is a structural protein that provides the bagel with its famous “tug” and elastic chewiness 17. Because the flour is refined, the tough outer bran and germ are removed, leaving a starch-heavy structure that the body can break down relatively quickly to access its energy reserves 14.
1.2 Physical & Culinary Performance
When fresh, a bagel has a shiny, firm crust and a soft but heavy interior that acts as a robust carrier for toppings 20. It reacts to heat by becoming crisp on the outside while maintaining its dense, moist middle 21. While it is safe to eat at room temperature, toasting is the preferred method to improve its texture and bring out its nutty aroma. In smoothies, pieces of bagel can be used as a heavy thickening agent; the high protein and starch content create a very thick body that helps keep lighter ingredients from separating into layers.
1.3 Storage & Life Hacks
The main threat to bagels is staling, a process where starches move around and turn the bread hard and dry. Store them in an airtight bag at room temperature, or freeze them immediately to keep them fresh for several weeks. A brilliant life hack for health is to toast the bagel and then let it cool slightly, which can increase the amount of “resistant starch,” a type of carbohydrate that feeds your healthy gut bacteria 11 12. Another clever kitchen use is to use day-old bagels for “bread puddings” or as croutons, as their dense structure holds up exceptionally well to soaking.
1.4 Suitability & Ethics
Bagels contain high levels of gluten, making them strictly unsuitable for those with coeliac disease 17. They are almost always vegan, though some brands may use honey in the boiling water or egg washes on the crust, so shoppers should check labels carefully 19. Ethically, bagels are a processed food, meaning they require more energy to produce than simple loaves of bread due to the unique boiling step and the high-protein flour requirements 21.
1.5 Seasonality & Environment
Wheat is harvested once a year in late summer, but bagels are a year-round staple in UK shops 24. Their production is water-intensive, requiring nearly 350 litres of freshwater for a large protein-targeted portion, used both for growing the wheat and the boiling process 13. While land use is efficient compared to animal products, the high demand for intensive wheat farming contributes to “eutrophying emissions,” which is when fertiliser run-off causes algae to grow in local waterways 13.
1.6 Safety & Consumption Context
Some sources describe a standard portion as one bagel, though roughly 189g is required to meet 20g of protein 2 3. Because they are dense and high in fructans, they are considered a “high FODMAP” (relatively difficult to digest) food and may cause bloating in sensitive individuals 18. Traditionally, they are balanced with high-protein plant-based spreads and plenty of fresh vegetables to slow down the digestion of the refined wheat and provide a more balanced meal.
1.7 Health & Nutrition Superpower
The “superpower” of enriched bagels is their massive Manganese and Selenium content, providing 142% and 125% of the daily requirement in a single audit portion respectively 2. Manganese helps the body build strong bones, while Selenium acts as an antioxidant to protect your cells from damage. They are also an exceptional source of Thiamin (Vitamin B1) and Iron, which are vital for turning your food into energy and supporting healthy blood 3.
1.8 Glycaemic Response & Energy Release
Bagels have a medium to high glycaemic response, meaning they raise blood sugar levels quite quickly compared to whole grains. The dense starch structure provides a significant burst of energy, which is why they are often used by athletes as a pre-workout fuel. However, because they are made from refined flour, this energy is released faster than wholemeal bread, so pairing them with fibre-rich toppings is essential for a stable energy release 18.
1.9 Bioavailability & Antinutrient Dynamics
Bioavailability refers to how well your body can absorb the nutrients you eat. In plain bagels, the bioavailability of minerals like Iron and Zinc is improved by the yeast fermentation process used during dough proofing. The yeast helps break down “phytic acid,” which is a mineral blocker found in wheat 26. While refining the flour removes some minerals, the fermentation and boiling steps ensure that the nutrients remaining are easier for your gut to pick up and use 21.
2. Land-Use & Human Labour Efficiency
Traditional Production Score: 12/100
Traditional production is restricted by the seasonal wheat cycle and relies on vast horizontal fields 13. The multi-stage process of milling, proofing, boiling and baking creates a high energy and land footprint compared to simpler staples 21 22.
Ultra-Efficient Production Score: 78/100
Growing high-protein wheat in 16-storey buildings, with 8 underground aeroponic storeys, allows for year-round harvests and zero soil loss 4. By integrating the baking process within the same zero-air-loss building and recycling the boiling water, the annual nutrient yield per square metre of building footprint is vastly increased 4.
PANY: 72/100
Exceptional mineral and B-vitamin density with high multi-cycle vertical potential, though limited by the processing energy required for traditional bagel methods 4.
Human Labour Intensity (HLI)
- Traditional Labour Score: 68/100 (Large Amount of Manual Work)
Standard production requires significant manual work in bakeries, especially for traditional hand-rolled varieties, alongside industrial milling and packaging 20 21. - Automated Labour Score: 5/100 (Tiny Amount of Manual Work)
In the proposed efficient production system, AI-driven gantries manage the wheat, and robotic systems handle the dough-shaping, boiling and baking, requiring almost zero physical human labour 4.
Data Tables
1. Main Nutrients Table: Plain Bagels (Enriched)
Strictly sorted in descending order by % Ref Value per 20g Protein Portion (188.68 g 2). All details provided are for Bagels (Plain, Enriched) 3.
| Nutrient | % Ref Value per 20g Protein Portion (188.68g) | % Ref Value per 200 Cals | % Ref Value per 100g | Amount per 100g |
| Manganese (Mn) | 142.1% 2 | 71.5% 3 | 75.3% 3 | 1.4 mg 3 |
| Selenium (Se) | 125.8% 2 | 63.3% 3 | 66.7% 3 | 40.0 mcg 3 |
| Vitamin B1 (Thiamin) | 97.9% 2 | 49.3% 3 | 51.9% 3 | 0.57 mg 3 |
| Iron (Fe) | 67.9% 2 | 34.2% 3 | 36.0% 3 | 10.6 mg 3 |
| Folate (B9) | 50.0% 2 | 25.2% 3 | 26.5% 3 | 106.0 mcg 3 |
| Vitamin B3 (Niacin) | 44.4% 2 | 22.4% 3 | 23.5% 3 | 3.3 mg 3 |
| Protein | 44.4% 2 | 22.4% 3 | 23.6% 3 | 10.6 g 3 |
| Phosphorus (P) | 38.3% 2 | 19.3% 3 | 20.3% 3 | 142.0 mg 3 |
| Carbohydrates | 37.0% 2 | 18.6% 3 | 19.6% 3 | 52.4 g 3 |
| Magnesium (Mg) | 31.0% 2 | 15.6% 3 | 16.5% 3 | 51.0 mg 3 |
| Vitamin B2 (Riboflavin) | 29.1% 2 | 14.6% 3 | 15.4% 3 | 0.17 mg 3 |
| Energy (Calories) | 24.9% 2 | 10.0% 3 | 13.2% 3 | 264 kcal 3 |
| Zinc (Zn) | 21.2% 2 | 10.7% 3 | 11.2% 3 | 1.1 mg 3 |
| Calcium (Ca) | 19.8% 2 | 10.0% 3 | 10.5% 3 | 105.0 mg 3 |
| Vitamin B6 | 19.1% 2 | 9.6% 3 | 10.1% 3 | 0.11 mg 3 |
| Copper (Cu) | 19.0% 2 | 9.6% 3 | 10.1% 3 | 0.12 mg 3 |
| Vitamin B5 | 14.3% 2 | 7.2% 3 | 7.6% 3 | 0.38 mg 3 |
| Fibre | 10.1% 2 | 5.1% 3 | 5.3% 3 | 1.6 g 3 |
| Potassium (K) | 5.8% 2 | 2.9% 3 | 3.1% 3 | 107.0 mg 3 |
| Vitamin K1 | 3.8% 2 | 1.9% 3 | 2.0% 3 | 1.5 mcg 3 |
| Choline | No Ref | No Ref | No Ref | 14.6 mg 3 |
| Vitamin B7 (Biotin) | No Ref | No Ref | No Ref | Trace 3 |
| Chlorine (Cl) | No Ref | No Ref | No Ref | Trace 3 |
| Iodine (I) | No Ref | No Ref | No Ref | 0.6 mcg 3 |
| Vitamin K2 | 0.0% | 0.0% | 0.0% | 0.0 mcg 3 |
2. Amino Acid Table
Strictly sorted in descending order by % Ref Value per 20g Protein Portion (188.68 g 2). All details provided are for Bagels (Plain, Enriched) 5.
| Amino Acid | % Ref Value per 20g Protein Portion (188.68g) | Amount per 100g |
| Proline (Pro) | 509.7% 2 | 3.35 g 5 |
| Glutamic Acid (Glu) | 423.8% 2 | 9.95 g 5 |
| Tryptophan (Trp) | 254.0% 2 | 0.35 g 5 |
| Serine (Ser) | 271.7% 2 | 1.44 g 5 |
| Histidine (His) | 182.9% 2 | 0.64 g 5 |
| Phenylalanine (Phe) | 168.1% 2 | 1.47 g 5 |
| Isoleucine (Ile) | 164.4% 2 | 1.15 g 5 |
| Threonine (Thr) | 161.9% 2 | 0.85 g 5 |
| Leucine (Leu) | 153.5% 2 | 2.09 g 5 |
| Valine (Val) | 143.4% 2 | 1.30 g 5 |
| Alanine (Ala) | 131.5% 2 | 0.99 g 5 |
| Cysteine (Cys) | 122.0% 2 | 0.64 g 5 |
| Arginine (Arg) | 116.1% 2 | 1.09 g 5 |
| Aspartic Acid (Asp) | 107.4% 2 | 1.36 g 5 |
| Methionine (Met) | 101.0% 2 | 0.53 g 5 |
| Tyrosine (Tyr) | 97.2% 2 | 0.85 g 5 |
| Glycine (Gly) | 75.2% 2 | 1.06 g 5 |
| Lysine (Lys) | 68.0% 2 | 0.71 g 5 |
3. Fatty Acid Table
Strictly sorted in descending order by % Ref Value per 20g Protein Portion (188.68 g 2). All details provided are for Bagels (Plain, Enriched) 3.
| Fatty Acid | % Ref Value per 20g Protein Portion (188.68g) | % Ref Value per 200 Cals | % Ref Value per 100g | Amount per 100g |
| Polys | 7.4% 2 | 3.7% 3 | 3.9% 3 | 0.94 g 3 |
| Total Fat | 3.6% 2 | 1.8% 3 | 1.9% 3 | 1.5 g 3 |
| Sat Fat | 2.8% 2 | 1.4% 3 | 1.5% 3 | 0.36 g 3 |
| Monos | 1.9% 2 | 1.0% 3 | 1.0% 3 | 0.29 g 3 |
| Omega-3 ALA | 0.4% 2 | 0.2% 3 | 0.2% 3 | 0.02 g 3 |
| Omega-3 EPA+DHA | 0.0% 2 | 0.0% 3 | 0.0% 3 | 0.0 g 3 |
4. Fibre Fractions Table
| Fibre Type | Description | Notes |
| Arabinoxylan (AX) | Non-cellulosic hemicellulose | Primary fibre in white flour; resists digestion prebiotically 10. |
| Resistant Starch | Retrograded starch | Formed by the unique boiling/baking/cooling cycle of bagels 11 12. |
| Cellulose | Structural plant carbohydrate | Present in trace amounts due to the refining of the wheat endosperm 7. |
5. Anti-Nutritional Factors Table
| Factor | Level | Impact & Mitigation |
| Phytic Acid | Moderate | Binds minerals; reduced by yeast fermentation during dough proofing 26. |
| Lectins | Low | White flour contains minimal wheat germ agglutinin; deactivated by baking 6. |
| Alpha-Amylase Inhibitors | Trace | Naturally present; largely inactivated by the bagel boiling process 6. |
6. Phytochemicals Table
Strictly sorted in descending order by % Ref Value per 20g Protein Portion (188.68 g) 2. All details provided are for Bagels (Plain, Enriched) 3.
| Phytochemical Group | Specific Compounds | Notes |
| Phenolic Acids | Ferulic acid, p-coumaric acid | Lower than wholewheat but present in the endosperm 14. |
| Carotenoids | Lutein, Zeaxanthin | Provides minor antioxidant activity from refined wheat 15. |
| Phyto-oestrogens | Lignans (Matairesinol) | Trace levels remain after the flour refining process 16. |
7. Allergen & Suitability Table
Strictly sorted in descending order by % Ref Value per 20g Protein Portion (188.68 g) 2. All details provided are for Bagels (Plain, Enriched) 3.
| Category | Status | Notes |
| Gluten | High | High-protein flour creates the signature chew 17. |
| Wheat | Present | Primary ingredient; major allergen 17. |
| FODMAPs (difficult to digest substances) | High | Contains fructans; typically exceeds “low FODMAP” (highly-digestible) limits 18. |
| Vegan | Usually Suitable | Traditional recipes are vegan; check for egg/honey washes 19. |
8. Commercial Forms Table
Strictly sorted in descending order by % Ref Value per 20g Protein Portion (188.68 g) 2. All details provided are for Bagels (Plain, Enriched) 3.
| Form | Description | Notes |
| New York Style | Boiled then baked | Boiling creates the classic shine and chewy crust 20. |
| Montreal Style | Boiled in honey-water | Denser, sweeter and usually wood-fired 20. |
| Steam-Baked | No boiling step | Softer, bread-like texture common in grocery brands 21. |
9. Environmental Indicators Table
Strictly sorted in descending order by Value per 20g Protein Portion (188.68 g) 2. All details provided are for Bagels (Plain, Enriched) 3.
| Indicator | Value per 20g Protein Portion (188.68g) | Value (per 100g) | Notes |
| Freshwater Withdrawals | 348.11 Litres 2 | 184.5 Litres 13 | High usage for wheat irrigation and boiling 13. |
| Eutrophying Emissions | 1.53 g PO₄³⁻e 2 | 0.81 g PO₄³⁻e 13 | Run-off from intensive wheat fertilisation 13. |
| Land Use | 0.98 m² 2 | 0.52 m² 13 | Land for wheat cultivation 13. |
| GHG Emissions | 0.49 kg CO2e 2 | 0.26 kg CO2e 22 | Includes baking energy and refrigeration 22. |
10. Home Growing Feasibility Table
Strictly sorted in descending order by % Ref Value per 20g Protein Portion (188.68 g) 2. All details provided are for Bagels (Plain, Enriched) 3.
| Growing Method | Feasibility | Notes |
| Micro-Greens | High | Wheatgrass is easily grown indoors for nutrients 23. |
| Home Baking | Moderate | Requires high-protein flour and a boiling step 21. |
| Back Garden Wheat | Low | Requires 10–20 sq m for a small yield 24. |
Endnotes
- Throughout this audit, each food’s nutrient content has been compared to the Reference Daily Intakes (RDIs) of different nutrients, essential fats and amino acids for 21-24 year old females. These were based on data from the World Health Organisation (WHO), the USDA Dietary Guidelines, and the UK Scientific Advisory Committee on Nutrition (SACN). For full details, visit: https://naturalhuman.co.uk/reference-intakes/. These values were selected solely as a standardised, fixed benchmark to calculate and compare the exact percentage of nutrients provided by different foods per portion. Using a single baseline like this allows for an objective, side-by-side comparison of individual foods’ nutritional profiles; however, these targets are not universally applicable & must not be considered to be a recommendation.
- Google AI – Calculated portion size based on protein density.
- Nutrition Data Tools – Bagels Nutrition Facts.
- Google AI – Internal knowledge.
- MyFoodData – Total Amino Acids in Bagels, plain, enriched.
- Harvard T.H. Chan – Are Anti-Nutrients Harmful?.
- Rothamsted Repository – Challenges to Increasing Dietary Fiber in White Flour.
- MyFoodData – Nutrition Facts for Bagel (100g).
- Foodstruct – Bagel Mineral and Vitamin Comparison.
- PMC – Arabinoxylan and Beta-Glucan in White Flour.
- Arrell Food Institute – Resistant Starch in Specialized Bagels.
- BAKERpedia – Types of Resistant Starch.
- Poore & Nemecek (Science via Our World in Data) – Environmental Impacts of Food.
- ScienceDirect – Phenolic acids in white and whole wheat.
- MDPI – Carotenoids in Wheat Flour.
- Journal of Agricultural and Food Chemistry – Lignans in Cereal Products.
- Food Standards Agency – Allergen Guidance.
- Monash University – Fructans in Bread and Bagels.
- The Vegan Society – Is Bread Vegan?.
- The Atlantic – The Geography of the Bagel.
- BAKERpedia – Bagel Production Methods.
- CarbonCloud – Climate Footprint of Wheat Bread.
- RHS – How to grow wheatgrass.
- Gardeners’ World – Growing Cereals at Home.
- Foodstruct – Bagel nutrition: calories, carbs, GI, protein.
- ScienceDirect – Phytic Acid in Wheat Fermentation.
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