Cereals, Grains & Flours
Hemp Flour

This food is best grown in traditional open-air farms.

1.1 Overview & Structure

Hemp flour is a nutrient-dense, plant-based powder made by milling the “press cake” left over after hemp seeds have been squeezed for their oil ^{2, 27}. Its physical build is distinctive because it is “defatted”, meaning the heavy oils are removed to leave behind a structure rich in protein and structural fibres ^{2, 3}. The starches and proteins are held in a matrix of tough cell walls that are very hard for the body to break down, resulting in a slow and steady release of energy ⁷. Unlike many plant sources, hemp provides a “complete” protein, containing all nine essential amino acids that the human body cannot make itself ²⁴.

1.2 Physical & Culinary Performance

In the kitchen, hemp flour acts as a hearty, rustic ingredient with a dark green or brown colour and a deep earthy scent ²⁷. When raw, it has a slightly gritty texture because of its high “insoluble fibre” content, which does not dissolve in water ⁷. When heat is applied, it does not stretch like wheat flour because it lacks gluten; instead, it provides a dense, nutty body to baked goods ²². It is safe to eat raw and is a popular addition to smoothies or cold uncooked soups, where it adds significant thickness and helps stop other ingredients from separating ²⁸.

1.3 Storage & Life Hacks

Because hemp flour contains delicate natural fats, including Omega-3, it is sensitive to heat and light ^{4, 8}. If stored in a warm place, these fats can go “rancid”, a common sense term for when oils spoil and smell like old paint. A clever “life hack” for the kitchen is to store hemp flour in the fridge or freezer to keep the nutrients stable for much longer. Another hack is to mix it with lighter flours in a 1:4 ratio; this allows you to gain the nutritional “superpowers” without making the final bread too heavy or crumbly ²⁷.

1.4 Suitability & Ethics

Hemp is 100% plant-based and naturally gluten-free, making it an ideal choice for vegans and those with coeliac disease ^{22, 24}. It is a “low risk” allergen, though very rare cases of sensitivity exist ²³. From an ethical perspective, hemp is one of the most “responsible” crops on earth because it is “carbon-negative”, meaning it breathes in more carbon dioxide than the machines emit during its production ^{32, 41}. It is also non-intoxicating, containing only negligible trace amounts of THC ^{11, 14}.

1.5 Seasonality & Environment

Hemp is a fast-growing summer crop that reaches maturity in about 3 to 4 months ⁴¹. It has a very low water footprint as it is usually “rain-fed”, meaning it relies on natural rainfall rather than extra irrigation ^{33, 35}. A major environmental benefit is its deep “taproots”, which act like common sense drills to break up hard soil and pull up nutrients for future crops ^{38, 43}. It is naturally resistant to pests, so farmers rarely need to use chemical sprays or weedkillers ^{39, 41}.

1.6 Safety & Consumption Context

Some sources describe hemp flour as a “functional food” because of its high mineral density ⁸. Traditionally, it is used in small amounts to fortify other foods rather than being eaten as a main dish ²⁸. It is considered “low FODMAP” (highly-digestible), which is a simple way of saying it is gentle on the digestive system and unlikely to cause bloating compared to bean flours ²⁶. In many places like the UK, growing hemp at home requires a specific license from the government ⁴².

1.7 Health & Nutrition Superpower

The nutritional “superpower” of hemp flour is its staggering Manganese and Magnesium content, providing nearly 300% and 156% of the daily requirement in a single protein-focused portion ^{2, 3}. It is also a powerhouse of Iron and Zinc, offering over 60% of the reference value to support healthy blood and a strong immune system ³. Furthermore, it contains unique “Cannflavins”, which are healthy plant chemicals noted for their powerful anti-inflammatory properties ¹⁸.

1.8 Bioavailability & Antinutrient Dynamics

Hemp flour contains “phytic acid”, a natural plant compound that can “bind” to minerals like zinc and iron, making them harder for the body to absorb ⁹. To improve “bioavailability”, which is a common sense term for how much goodness your body can actually use, the flour can be used in sourdough baking ⁹. The natural acids in sourdough help break down the phytic acid, effectively “releasing” the minerals so the body can soak them up more easily ⁹.

1.9 Microbial & Amino Profile

Hemp flour has an exceptional amino acid profile, particularly high in “Arginine” and “Glutamic Acid”, which support healthy blood flow and brain function ⁵. It is also rich in “Lignanamides”, which are unique compounds studied for their “neuroprotective” effects, a simple term for protecting the brain and nervous system from stress ²⁰. Because it is high in soluble fibre, it also acts as a “prebiotic”, providing a fuel source for friendly bacteria in the gut ^{7, 8}.

2. Land-Use & Human Labour Efficiency

Annual Nutrients per Hectare (N/H)

Traditional Production Score: 72/100
Hemp is a high-yield crop that produces massive amounts of protein and minerals per hectare ³⁶. While limited to a single harvest cycle in the UK, its ability to improve soil health and grow without chemical inputs makes it more land-efficient than most cereal grains ^{38, 41}.
Ultra-Efficient Production Score: 82/100
In an 8-storey system, hemp benefits from its fast growth cycle, potentially allowing for 3 or 4 harvests per year under LED “light recipes” ⁴¹. However, it faces a “headroom penalty” because hemp plants can grow very tall, which limits the number of storeys that can be stacked in a building ⁴⁴.

Potential Annual Nutrient Yield (PANY)

PANY: 88/100 – Exceptional Manganese and Magnesium density, “complete” protein profile and world-class carbon sequestration, though limited by physical plant height ^{2, 24, 32}.

Human Labour Intensity (HLI)

Traditional Labour Score: 15/100 – Small Amount of Manual Work.
Industrial hemp farming is highly mechanised, with large machines handling the planting and harvesting.
Automated Labour Score: 5/100 – Tiny Amount of Manual Work.
The proposed system would use robotic harvesters and automated cold-pressing systems, reducing the physical human requirement to almost zero.

1. Main Nutrients Table

Strictly sorted in descending order by % Ref Value per 20g Protein Portion (60.61 g). All details provided are for Hemp Flour (Defatted).

Nutrient	% Ref Value per 20g Protein Portion	% Ref Value per 200 Cals	% Ref Value per 100g	Amount per 100g
Manganese	293.21% ²	151.14% ²	483.87% ²	9.0 mg ³
Magnesium	156.40% ²	80.62% ²	258.06% ²	800.0 mg ³
Phosphorus	103.90% ²	53.56% ²	171.43% ²	1200.0 mg ³
Copper	101.01% ²	52.07% ²	166.67% ²	2.0 mg ³
Iron	61.85% ²	31.88% ²	102.04% ²	30.0 mg ³
Zinc	61.84% ²	31.88% ²	102.04% ²	10.0 mg ³
Fibre	50.51% ²	26.04% ²	83.33% ²	25.0 g ⁴
Protein	44.44% ²	22.91% ²	73.33% ²	33.0 g ³
Vitamin B6	33.06% ²	17.04% ²	54.55% ²	0.6 mg ⁵
Folate (B9)	16.67% ²	8.59% ²	27.50% ²	110.0 mcg ⁵
Potassium	15.58% ²	8.03% ²	25.71% ²	900.0 mg ⁴
Vitamin B1 (Thiamin)	14.88% ²	7.67% ²	24.55% ²	0.27 mg ⁵
Energy	12.12% ²	10.00% ²	20.00% ²	400.0 kcal ³
Vitamin B2 (Riboflavin)	11.02% ²	5.68% ²	18.18% ²	0.2 mg ⁵
Vitamin B3 (Niacin)	8.66% ²	4.46% ²	14.29% ²	2.0 mg ⁵
Calcium	4.24% ²	2.19% ²	7.00% ²	70.0 mg ⁴
Sodium	0.00% ²	0.00% ²	0.00% ²	0.0 mg ⁴
Choline	No Ref ¹	No Ref ¹	No Ref ¹	45.0 mg ⁶
Vitamin B7 (Biotin)	0.00% ²	0.00% ²	0.00% ²	Trace ⁵
Vitamin K1	0.00% ²	0.00% ²	0.00% ²	Trace ⁴
Vitamin K2	0.00% ²	0.00% ²	0.00% ²	0.0 mcg ⁴
Chloride	0.00% ²	0.00% ²	0.00% ²	Trace ³
Iodine	0.00% ²	0.00% ²	0.00% ²	0.0 mcg ⁴

2. Amino Acid Table

Strictly sorted in descending order by % Ref Value per 20g Protein Portion (60.61 g). All details provided are for Hemp Flour (Defatted).

Amino Acid	% Ref Value per 20g Protein Portion	Amount per 100g
Arginine (Arg)	200.17% ²	5.85 g ⁵
Glutamic Acid (Glu)	102.58% ²	7.50 g ⁵
Phenylalanine (Phe)	55.09% ²	1.50 g ⁵
Serine (Ser)	54.55% ²	0.90 g ⁵
Histidine (His)	50.51% ²	0.55 g ⁵
Tyrosine (Tyr)	44.08% ²	1.20 g ⁵
Glycine (Gly)	36.43% ²	1.60 g ⁵
Aspartic Acid (Asp)	35.48% ²	1.40 g ⁵
Valine (Val)	35.44% ²	1.00 g ⁵
Leucine (Leu)	35.37% ²	1.50 g ⁵
Threonine (Thr)	33.67% ²	0.55 g ⁵
Alanine (Ala)	32.01% ²	0.75 g ⁵
Isoleucine (Ile)	31.25% ²	0.68 g ⁵
Proline (Pro)	26.90% ²	0.55 g ⁵
Tryptophan (Trp)	23.31% ²	0.10 g ⁵
Methionine (Met)	18.37% ²	0.30 g ⁵
Cysteine (Cys)	12.24% ²	0.20 g ⁵
Lysine (Lys)	10.77% ²	0.35 g ⁵

3. Fatty Acid Table

Strictly sorted in descending order by % Ref Value per 20g Protein Portion (60.61 g). All details provided are for Hemp Flour (Defatted).

Fatty Acid	% Ref Value per 20g Protein Portion	% Ref Value per 200 Cals	% Ref Value per 100g	Amount per 100g
Omega-3 ALA	10.10% ²	8.33% ²	16.67% ²	2.0 g ⁴
Omega-3 EPA+DHA	0.00% ²	0.00% ²	0.00% ²	0.0 g ¹

4. Fibre Fractions Table