Botany: a legume that grows underground
The peanut (Arachis hypogaea) isn't a nut. It's a legume in the same family as beans, peas, and lentils. And it does something almost no other crop does: it flowers above ground, then bends its fertilized flower stalks downward and pushes them into the soil, where the seed pods develop. The name hypogaea literally means "below ground." Other languages got it more right: the British "groundnut," the French "arachide de terre."
The peanut originated in South America, in the foothills of the Andes in what's now Bolivia and northern Argentina. Archaeological evidence puts cultivation back at least 7,500 years. From there, Spanish and Portuguese traders carried it across the world in the 16th and 17th centuries. It traveled to Africa, where it became a staple. To Asia, where China and India built enormous domestic industries. And eventually back to North America, brought by enslaved Africans who knew how to grow it.
The peanut isn't a nut, it's not American-native to North America, and the country that consumes the most doesn't grow most of it. Almost every assumption about the peanut is wrong.
The plant itself is a low bush, 30-50cm tall, with small yellow flowers. After self-pollination, the flower stalk (called a peg) elongates downward and pushes the developing pod into the soil. The pod matures underground over 3-5 months. Harvest requires lifting the entire plant out of the ground, hand or machine, and separating the pods.
Growing regions: China, India, Argentina, USA
The peanut market splits between production and export. China and India together grow 60%+ of the world's peanuts, but they consume almost everything they grow. The export trade is dominated by a much smaller set of countries: Argentina, the U.S., Brazil, and a few African origins.
Argentina is the dominant export player despite being only the 5th producer. The country exports roughly 90% of its production, mostly the high-quality "Runner" variety from Córdoba province. Argentine peanuts are the global benchmark for confectionery and roasting markets in Europe and Asia. Quality is consistent, traceability is strong, and the supply chain is well-organized.
USA production is split between four regions: Georgia/Florida/Alabama (Runner peanuts, 80% of U.S. crop), Virginia/North Carolina (Virginia peanuts, large kernels for in-shell), Texas/Oklahoma (Spanish peanuts, used in confectionery), and New Mexico (Valencia peanuts, sweet small kernels). The U.S. mostly consumes domestically, exporting around a quarter of production.
China grows mostly for oil production. Roughly 50% of Chinese peanut goes into oil pressing. Domestic snack consumption absorbs almost all of the rest. Chinese peanut exports are tiny relative to production.
India is similar to China: large production, almost entirely domestic consumption. India is the world's largest peanut oil consumer. Exports are growing but remain small.
The varieties that run the trade
Medium kernel size, uniform shape, ideal for mechanical processing. Used for peanut butter, snack peanuts, candy bars, and most industrial applications. The global standard. Argentine Runner is the benchmark for export-quality peanut.
The largest kernels in the trade, sometimes called "Ballpark peanuts" for their use at U.S. baseball games. Used for in-shell roasting (the salted bagged peanut), gift packs, and premium snack mixes. Higher price than Runner. Grown mainly in Virginia, the Carolinas, and parts of Texas.
Smaller kernels with a distinctive reddish-brown skin. Higher oil content than other varieties (around 50% vs. 47%), making it ideal for pressing and confectionery. The peanut in chocolate-covered candy and pralines. Grown mainly in Texas, Oklahoma, and parts of South Africa.
Small sweet kernels in pods that typically hold three or more (Runner and Virginia usually hold two). Most distinctive flavor of any variety: noticeably sweeter, slightly more intense. Limited production, mostly New Mexico. The peanut for premium peanut butter and natural peanut snacks.
Forms and processing
Peanut moves through the supply chain in several forms, each with a different cost and use case.
| Form | Description | Main use |
|---|---|---|
| In-shell raw | Whole pods, unroasted | Industrial processing |
| In-shell roasted | Roasted pods (salted/unsalted) | Ballpark snack, retail |
| Shelled raw kernels | Kernels, skin on, unroasted | Roasting, peanut butter, oil |
| Blanched kernels | Kernels with skins removed | Confectionery, premium snack |
| Splits | Kernels split into halves | Cooking, granola, snacks |
| Granulated / Diced | Chopped or ground | Bakery, ice cream, coatings |
| Peanut paste / butter | Ground kernel mass | PB jars, industrial confectionery |
| Peanut oil | Pressed cooking oil | Cooking, especially Asian |
The peanut industry is one of the most vertically integrated in the nut trade. A single major processor (Olam, ADM, Birdsong) can handle the peanut from farm gate through cleaning, shelling, blanching, grading, roasting, grinding, and oil extraction. This integration is why peanut prices are some of the most transparent and stable in the trade.
Nutrition and the protein story
For all the talk of "nuts," the peanut is technically a legume, and its nutritional profile shows it. The peanut is unusually high in protein (around 25g per 100g, the highest of any "nut") and exceptionally rich in folate, niacin, and biotin. The fat profile is healthy: mostly monounsaturated, like olive oil.
The protein quality is high for a plant source. Peanut protein has a good amino acid profile, particularly rich in arginine. Peanut butter remains one of the most affordable high-protein foods globally and is a foundation of school lunch programs in many countries.
The fat is roughly 50% monounsaturated, 33% polyunsaturated, and only 17% saturated. Zero cholesterol. Peanuts also contain resveratrol, the same antioxidant found in red wine, and a meaningful amount of vitamin E. The mineral profile is solid: magnesium, phosphorus, copper, and manganese all in significant amounts.
The allergen reality: Ara h 2
Peanut allergy is the most common food allergy in many Western countries, affecting roughly 2% of children in the U.S. and U.K. Unlike most tree nut allergies, peanut allergy is severe: anaphylaxis is common, and reactions can be triggered by trace amounts. The allergen responsible is Ara h 2, a specific peanut storage protein that's both heat-stable and digestion-resistant.
Peanut allergy rates have roughly tripled in Western countries since 2000. The cause isn't fully understood but appears linked to changes in infant feeding practices, hygiene exposure, and skin barrier development. Recent research (LEAP study) shows that early introduction of peanut to infants (under medical guidance) significantly reduces allergy development. This reversed decades of recommended avoidance.
For the trade, peanut allergen risk means strict segregation in processing facilities. Many tree-nut and snack manufacturers run completely peanut-free plants to avoid cross-contamination. "May contain peanut" labels are real warnings, not legal cover.
New treatments are emerging. Oral immunotherapy (OIT) protocols can desensitize many peanut-allergic patients over months of gradual dosing. The FDA-approved drug Palforzia is now available. But for now, strict avoidance remains the standard medical advice for allergic individuals.
Beyond peanut butter: industrial uses
Peanut butter is the most visible peanut product in Western markets, but globally, peanut oil is much bigger. China alone uses millions of tons of peanut oil annually for cooking. Indian cuisine relies on peanut oil for frying and tempering. Even in the U.S., peanut oil is the standard for fast-food frying (Chick-fil-A famously fries everything in peanut oil).
Peanut oil: high smoke point (450°F), neutral flavor, stable for high-heat cooking. Refined peanut oil has the allergenic proteins removed and is considered safe for most peanut-allergic individuals, though strict avoidance is still recommended. Unrefined "cold-pressed" peanut oil retains more flavor and is used in Asian cooking.
Peanut flour: defatted ground peanut, used as a protein supplement in baking and as a base for sauces. Roasted peanut flour is the flavor base of Thai satay sauce and many African stews.
Peanut paste (industrial): the base for chocolate bars, ice cream inclusions, granola bars, and trail mix. Industrial peanut paste is often blended with hydrogenated oil for shelf stability, distinct from the "natural" peanut butter sold at retail.
Famine relief: RUTF (Ready-to-Use Therapeutic Food), the peanut-based paste developed in the 1990s, has saved millions of lives in famine and severe-malnutrition contexts. Plumpy'Nut, the most famous brand, is essentially fortified peanut paste in single-serve sachets. UNICEF distributes it globally.
Storage, freshness, and aflatoxin
Peanut is highly vulnerable to aflatoxin contamination. The fungus Aspergillus flavus thrives on peanut, especially under hot, humid conditions or after drought stress. Aflatoxins are among the most carcinogenic naturally-occurring compounds known.
The peanut trade is therefore one of the most heavily-tested commodity chains in food. Argentine, U.S., and most European processors run aflatoxin testing on every batch before shipment. The EU enforces some of the strictest limits in the world (4 ppb total aflatoxin), and shipment rejections are common when limits are exceeded.
Raw shelled peanut: refrigerate in sealed packaging, use within 6 months. In-shell roasted: cool dry place, 3-4 months. Frozen: up to a year. Peanut butter (commercial, with stabilizers): pantry up to a year; natural peanut butter: refrigerate after opening, use within 3 months. Rancidity in peanut develops as a sharp, almost paint-like smell.
The market outlook 2026
The global peanut market is one of the most stable in the nut trade. Production volume is large (50+ million tons annually), demand is geographically diversified, and the main producing countries are politically stable. Prices typically fluctuate within a narrower band than tree nuts.
Key trends:
- African expansion: Nigeria, Sudan, Senegal, and Tanzania are all increasing peanut production. African peanut still struggles with aflatoxin control and consistent quality, but improvements are real.
- Argentine quality lead: Argentina continues to set the global benchmark for export-quality Runner. Investment in storage, traceability, and certification keeps the country a step ahead.
- U.S. domestic shifts: Peanut butter consumption in the U.S. has plateaued, but snack and confectionery demand is growing.
- Plant-protein integration: peanut protein is finding new markets in plant-based meat alternatives, protein powders, and high-protein bars.
The buyer's guide
Peanut is one of the easier commodities to source well, because the global trade is mature and the major exporters (Argentina, U.S.) produce consistent quality at scale.
Peanut butter / industrial processing: Runner from Argentina or U.S. Southeast. The volume standard. Reliable supply, predictable pricing, established testing protocols.
In-shell snack / premium retail: Virginia from the U.S. Carolinas. Large kernels, the "ballpark peanut" association.
Confectionery / chocolate-covered candy: Spanish from Texas or Argentina. Higher oil content, distinctive red skin.
Premium natural / sweet flavor: Valencia from New Mexico. Limited supply, distinct flavor profile.
Critical: always require aflatoxin certification with every shipment. Reliable suppliers provide it as standard. If a supplier hesitates on testing documentation, walk away.
The peanut isn't a nut, it isn't fancy, and it isn't expensive. What it is, is the most-eaten "nut" in the world, the cheapest high-protein food on most shelves, and the largest food allergen on the planet. Three things every buyer needs to understand at once.
Interested in this commodity?
Send Blue Star a quick message with your variety (Runner, Virginia, Spanish, Valencia), origin preference, and target volume.
Message us on WhatsApp