An Andean legume with a long history of traditional cultivation, a complete essential amino acid profile, and — like other legumes — the ability to fix atmospheric nitrogen into the soil it grows in. This is a scientific, historical, and cultural guide to a remarkable Andean crop.
PronouncedCHO-cho
Scientific Classification
Kingdom: Plantae
Family: Fabaceae
Genus: Lupinus
Species: L. mutabilis
Also Known As
Tarwi (Quechua) — Andean lupin — Pearl lupin
Native Region
Andean highlands of Ecuador, Peru, and Bolivia — typically 2,500–3,800 m (8,200–12,500 ft)
Educational reference only. This page is not intended as medical, nutritional, or dietary advice. Statements have not been evaluated by the FDA. Chocho is a food; it is not intended to diagnose, treat, cure, or prevent any disease. Consult a qualified healthcare professional before making significant dietary changes.
Chocho fields in the Ecuadorian Andes — cultivated by Andean farming communities at high elevation.
01
What Is Chocho
Botanical identity, physical characteristics, and what makes this species distinct among legumes.
An Ancient Legume. A Modern Food.
Chocho (Lupinus mutabilis) is a member of the Fabaceae (legume) family, related to lupins found across the Mediterranean and the Americas. Unlike most lupins, chocho has been selectively cultivated at high altitude in the Andes for thousands of years — resulting in a distinct species well adapted to cold, high-UV, mineral-rich growing conditions.1
The bean itself is roughly the size of a soybean, white to cream in color, with a smooth, firm seed coat. 2
Among plant proteins, chocho is unusual for combining a set of characteristics in a single whole-food ingredient: a complete essential amino acid profile, high dietary fiber content, negligible sugar, and no detected gluten in Mikuna's third-party testing.
Protein per 100g~52-56g (whole milled seed)
Fiber per 100g~24g dietary fiber
Total Sugars<1g
Cholesterol0mg
GlutenTested <3 ppm (below FDA 20 ppm gluten-free threshold)
Digestibility (literature)~80–92% true protein digestibility for debittered Lupinus mutabilis1
Major Allergens (FDA)Does not contain milk, egg, fish, shellfish, tree nuts, wheat, peanuts, soy, or sesame. Lupin is recognized as a food allergen in the European Union.
Values reflect Mikuna Pure Chocho per the most recent Eurofins Certificate of Analysis (Nov 2025). Subject to natural lot-to-lot variability.
A single legume — complete essential amino acid profile, minimally processed, traditionally grown at altitude.
02
Nutrition Science
Amino acid panel, macronutrient profile, and protein quality research — drawn from peer-reviewed literature and Mikuna's third-party laboratory analysis.
A Complete Essential Amino Acid Profile.
Chocho's nutritional profile reflects both its species genetics and its growing environment. Peer-reviewed research on Lupinus mutabilis reports protein content ranging from approximately 41–51% on a dry weight basis (before dehydration), with a complete essential amino acid profile.1,3 Mikuna's own COA & Eurofins analysis reports approximately 52-56g of protein per 100g of whole milled seed.
Chocho contains all nine essential amino acids — histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan, and valine — meaning it qualifies as a complete protein by the standard nutritional definition.3
From the Scientific Literature
Peer-reviewed studies of debittered Lupinus mutabilis report true protein digestibility in the range of approximately 80–92%, with variability depending on debittering method, sample preparation, and assay.1 This range overlaps with published values for several animal-source and whole-food plant proteins.
Amino Acid Profile — Mikuna Pure Chocho, per 100g
Glutamic Acid11,880 mg
Cystine + Methionine *11,200 mg
Aspartic Acid5,090 mg
Arginine5,040 mg
Tryptophan *4,500 mg
Leucine * **3,740 mg
Tyrosine + Phenylalanine *3,700 mg
Lysine *2,930 mg
Serine2,740 mg
Isoleucine * **2,450 mg
Glycine2,020 mg
Valine * **2,010 mg
Proline1,970 mg
Threonine *1,850 mg
Alanine1,740 mg
Histidine *1,410 mg
* Essential amino acid. ** Branched-Chain Amino Acid (BCAA). Source: Eurofins Scientific COA, Report AR-25-JD-094919-01, Sample CPP5LBPC, reported 09 Dec 2025. Methods: AOAC 982.30, 988.15, 994.12 (all modified). Results reported on an as-received basis. Values subject to natural lot-to-lot variability.
Whole-Food Plant Protein Sources Compared — per 100g
The table below compares chocho against other whole-food plant protein sources (not isolates or concentrates). Protein isolates are a different product category produced by removing fiber and other seed components to concentrate protein; they are not directly comparable to whole-seed values.
Source (whole food)
Chocho
Whole soybeans (mature, raw)
Hemp seed (hulled)
Split peas (mature, raw)
Lentils (mature, raw)
Protein
~52–56 g
~36 g
~32 g
~24 g
~25 g
All 9 essential amino acids
✓
✓
✓
✓
✓
Dietary fiber
~24 g
~9 g
~4 g
~26 g
~11 g
Total sugars
<1 g
~7 g
~1.5 g
~8 g
~2 g
Notable consideration
Traditionally debittered
Requires cooking / processing
Lower lysine
Lower methionine
Lower methionine
Sources: Eurofins Scientific COA, Report AR-25-JD-094919-01, Sample CPP5LBPC (chocho). USDA ARS FoodData Central (FDC IDs: soybeans 174270; hemp seed hulled 170148; split peas 172428; lentils 172420). Values are approximate and subject to natural lot-to-lot variability. Protein isolates (pea, soy, rice) are a distinct product category not included in this whole-food comparison and typically report 70–90g protein per 100g because fiber and other components are removed during processing. These statements have not been evaluated by the Food and Drug Administration; this product is not intended to diagnose, treat, cure, or prevent any disease.
Chocho has been cultivated in the Andes since at least the second millennium BC — documented through archaeobotanical evidence from pre-Columbian sites.
03
History & Origins
Archaeobotanical evidence traces chocho cultivation in the Andes to at least the second millennium BC. Its story includes ancient civilizations, colonial marginalization, and contemporary revival.
From Ancient Andean Fields to Modern Kitchens.
Archaeobotanical evidence indicates that Lupinus mutabilis was cultivated in the Andean region by at least approximately 1500 BC, with chocho remains documented at pre-Columbian sites in what is today Peru and Bolivia.4 It was an important part of the diet for Andean civilizations alongside quinoa, kañiwa, and amaranth, valued for its exceptional protein content and its ability to be stored for long periods after debittering.
Traditional Andean cultivation techniques included the construction of stone terraces (andenes) across steep mountain slopes — agricultural infrastructure that created microclimates suited to cold-tolerant crops, reduced erosion, and stabilized soil on high-altitude hillsides.5
Archaeobotanical Evidence
Seeds of Lupinus mutabilis have been recovered from archaeological sites in the central Andes dating to approximately 1500–1200 BC, establishing chocho as one of the earliest domesticated legumes in the Andean food system.4
Following the Spanish colonization of the Andes in the 16th century, many native Andean crops were socially marginalized in favor of imported European staples. Chocho, quinoa, and other traditional foods persisted primarily in Indigenous and rural communities, where seed-saving and traditional knowledge were transmitted across generations — often maintained by women as part of household and community food security.5
Interest in Andean crops has grown significantly in recent decades as researchers and consumers have revisited traditional foods for their nutritional density and cultural importance. Chocho has been the subject of ongoing research through institutions including the Food and Agriculture Organization of the United Nations (FAO) and regional agricultural research programs.
"Traditional seed-saving practices — often led by women — preserved Andean crop diversity through centuries when these foods were absent from mainstream markets."
Mikuna works directly with Andean farming communities in Ecuador to source Lupinus mutabilis. Founder Ricky Echanique, an Ecuadorian entrepreneur, built the supply chain around direct partnerships with smallholder farmers to support the continued cultivation of this traditional crop.
The Ecuadorian Andes — where chocho grows at high elevation on volcanic soil, fed by rainfall and high-altitude sunlight.
04
Ecology & Growing Conditions
The geology, altitude, and climate of the Ecuadorian Andes create growing conditions well suited to Lupinus mutabilis.
Grown in the High Andes.
Chocho's composition reflects its growing environment. In Ecuador, chocho is typically cultivated in a mountainous region sometimes called the 'Avenida de los Volcanes' (Avenue of the Volcanoes), which runs through the central Ecuadorian Andes and includes active and dormant volcanoes such as Cotopaxi, Chimborazo, and Tungurahua. This region is characterized by high elevation, volcanic soils, equatorial sunlight, and relatively stable rainfall patterns during the growing season.6
Typical chocho cultivation occurs between approximately 2,500 and 3,800 meters (roughly 8,200 to 12,500 feet) above sea level. At these elevations, the soil is classified as Andosol — formed from weathered volcanic ash — which is generally well-drained, porous, and rich in certain minerals. High-elevation cultivation is associated with higher UV exposure due to thinner atmospheric filtration, though claims about absolute UV intensity vary by latitude, season, and cloud cover.
Typical Altitude Range~2,500–3,800 m (~8,200–12,500 ft)
Soil TypeVolcanic Andosols
Water SourcePrimarily rain-fed in traditional cultivation
Pesticide UseNaturally pest-resistant due to alkaloid content; traditionally cultivated without synthetic pesticides
Growing Season (Ecuador)Typically Jan–Oct; exact timing varies by region
Primary CountriesEcuador, Peru, Bolivia
Chocho's growth cycle reflects adaptation to variable Andean conditions. The plant produces characteristic blue and purple flowers during the flowering phase, followed by pods containing several seeds per pod. Traditional smallholder cultivation relies on hand-harvesting once pods and vines have matured and dried.
Why Altitude Matters
Plants grown at high elevation often develop higher concentrations of secondary metabolites and certain nutrients as adaptive responses to UV exposure, cold stress, and mineral-rich volcanic soils. This is the same general mechanism researchers cite for the nutritional characteristics of high-altitude crops such as quinoa and amaranth.6
Like other legumes, chocho fixes atmospheric nitrogen through a symbiotic relationship with soil bacteria — contributing nitrogen to the soil as part of its natural growth cycle.
05
Regenerative Agriculture
The science of nitrogen fixation, soil biology, and how legume crops like chocho participate in soil nutrient cycles.
A Legume That Feeds the Soil.
Nitrogen is a limiting nutrient in most agricultural soils. Conventional crop production often relies on synthetic nitrogen fertilizers manufactured using fossil fuels, which can contribute to soil degradation and greenhouse gas emissions when applied at scale. Leguminous crops offer a biological alternative: they fix atmospheric nitrogen into forms usable by plants through symbiotic relationships with soil bacteria.7
Nitrogen Fixation Mechanism
Chocho, like other members of the Fabaceae family, forms symbiotic relationships with nitrogen-fixing bacteria (genus Rhizobium, or closely related Bradyrhizobium) in root nodules. Within these nodules, the nitrogenase enzyme catalyzes the conversion of atmospheric nitrogen (N₂) into ammonium (NH₄⁺), a form usable by plants and other soil organisms. This process contributes biologically fixed nitrogen to the soil system, potentially reducing the need for synthetic fertilizers in subsequent crop rotations.7
1
Root nodule formation
Soil-dwelling Rhizobium bacteria colonize emerging chocho roots and establish specialized nodules, initiating the nitrogen-fixing symbiosis.
2
Atmospheric nitrogen fixation
Within the nodules, the nitrogenase enzyme converts N₂ gas — which makes up roughly 78% of Earth's atmosphere — into ammonium (NH₄⁺), supplying nitrogen to the plant and surrounding soil.
3
Contribution to soil biology
Root exudates and nodule turnover support soil microbial communities. After harvest, decomposing root material can release additional nitrogen, with potential benefits for subsequent crops in rotation.
4
Potential soil carbon effects
Deep-rooting legumes may contribute organic matter to soil profiles. Actual carbon sequestration depends heavily on management practices, climate, and soil type, and varies across studies.
On Water Footprint
In traditional Andean cultivation, chocho is primarily rain-fed rather than irrigated. Comparative water footprint figures for different crops and protein sources vary significantly across studies and methodologies; readers interested in this topic are encouraged to consult peer-reviewed life-cycle assessments for specific comparisons relevant to their geography.
After harvest, legume root systems decompose and contribute nitrogen to the soil — part of the natural nutrient cycle that makes legumes valuable in crop rotations.
06
The Debittering Process
How a traditional Andean technique — refined with modern food safety controls — removes bitter alkaloids while preserving the seed's whole-food nutrient matrix.
Removing the Bitter. Keeping the Seed.
In its raw form, Lupinus mutabilis contains quinolizidine alkaloids — naturally occurring compounds that protect the plant from pests. These alkaloids are bitter to taste and can be harmful if consumed in significant quantities. Traditional Andean communities developed water-based debittering methods thousands of years ago: soaking and rinsing the seeds through repeated water changes until alkaloid levels dropped to safe concentrations.2
Mikuna's production refines this traditional method with modern food safety controls: measured water immersion, temperature management, and timing validated against alkaloid testing. The process uses only water — no solvents and no chemical extraction agents — which distinguishes it from many protein isolate production processes.
Process Distinction
Some plant protein isolates are produced using wet fractionation and, in certain cases, solvent-assisted extraction. Mikuna's debittering uses water only and retains the whole seed matrix — fiber, fats, and micronutrients — rather than isolating protein from the rest of the seed. Consumers concerned about specific processing methods should review manufacturer documentation for the specific products they consume.
1
Harvest & Sort
Seeds are harvested at maturity by Andean farming partners, then sorted and cleaned before processing.
2
Water Debittering
Controlled water immersion over multiple cycles reduces quinolizidine alkaloids, tannins, and certain antinutrients. The process is validated through alkaloid testing until levels fall below established safe thresholds.
3
Dehull & Dry
Seed coats are removed through mechanical dehulling. Seeds are dried to a low moisture content for shelf stability without preservatives.
4
Mill to Powder
Dried seeds are milled to a fine powder without high-heat denaturation. No additives, gums, fillers, or stabilizers are used.
5
Third-Party Testing
Every production lot is independently tested by Eurofins Scientific for heavy metals, pesticides, PFAS, microbial safety, amino acids, and purity before release. Current Certificates of Analysis are publicly available.
Neutral in flavor, fine in texture, heat stable at typical cooking temperatures — chocho moves from smoothies to baking to savory dishes.
07
Culinary Versatility
Chocho's mild flavor profile and fine milling support a wide range of beverage, baking, and savory applications.
A Versatile Protein Ingredient.
Chocho has a mild, nutty flavor and a fine powder consistency. Compared with some other plant proteins that have distinct beany, grassy, or chalky characteristics, chocho's profile tends to integrate into recipes without dominating. It is stable at typical cooking and baking temperatures, and can partially replace flour in many recipes.
Suggested usage rates below are general starting points. Individual recipes, baking chemistry, and personal preference will vary — adjust to taste and to the specific application.
Application
Typical Usage
Protein Added
Notes
Smoothies & beverages
~39 g (1/3 cup)
~20 g per serving
Mixes into water, milk alternatives, or cold brew
Sweet baked goods
Replace ~25–33% of flour
Varies
Pancakes, muffins, loaves, bars — adjust liquid as needed
Savory baked goods
Replace ~25% of flour
Varies
Flatbreads, crackers — mild flavor profile
Bowls & breakfast
Stir in 1–2 tbsp
~10–20 g
Oatmeal, yogurt, granola
Soups & sauces
Whisk into warm liquid
Varies
Adds body and protein; whisk to avoid clumping
Coffee & lattes
~1 tbsp per cup
~7 g
Neutral flavor; blend or froth thoroughly
Usage rates are general guidance only. Actual nutritional contribution depends on the specific product, recipe, and serving size — refer to current product packaging for Nutrition Facts.
Grown, harvested, and stewarded by Andean farming communities across the Ecuadorian highlands.
08
Cultural Significance
In many Andean communities, chocho is embedded in long-standing agricultural, culinary, and cultural traditions.
More Than a Crop. Part of a Tradition.
For many Andean communities, chocho is not only a food crop but part of a broader agricultural and cultural tradition that includes quinoa, kañiwa, amaranth, and other native species. These crops have been cultivated for millennia and carry significant cultural meaning alongside their nutritional role.5
Planting and harvest cycles in traditional Andean agriculture are often organized around seasonal calendars, community labor practices, and local ecological knowledge accumulated over many generations. This body of traditional agricultural knowledge remains an important part of cultural heritage in Andean regions of Ecuador, Peru, and Bolivia.
"In Kichwa — a native language of the Ecuadorian Andes — mikuna refers to food, nourishment, and the act of eating."
Following colonization, many native Andean crops received less institutional investment than introduced European crops. The continued cultivation of chocho through this period was supported in large part by Indigenous and rural communities, with seed-saving practices often maintained at the household and community level.
Today, Mikuna sources chocho through direct relationships with Andean farming partners, with the aim of supporting the continued cultivation of a traditional Andean crop while bringing it to broader markets.
Sourcing Model
Mikuna works directly with smallholder farmers in Ecuador. This direct-sourcing model is intended to support continued cultivation of a traditional Andean crop and to build long-term relationships with partner farming communities.
References
Sources & Citations
This page draws on peer-reviewed scientific literature, institutional agricultural research, and independent laboratory analysis. References are provided so readers can consult the original sources directly.
1
Gross, R., Von Baer, E., Koch, F., Marín, G., Trugo, L., & Wink, M. (1988). Chemical composition of a new variety of the Andean lupin (Lupinus mutabilis cv. Inti) with low-alkaloid content. Journal of Food Composition and Analysis, 1(4), 353–361. ↩
2
Carvajal-Larenas, F. E., Linnemann, A. R., Nout, M. J. R., Koziol, M., & van Boekel, M. A. J. S. (2016). Lupinus mutabilis: Composition, uses, toxicology, and debittering. Critical Reviews in Food Science and Nutrition, 56(9), 1454–1487. ↩
3
Jacobsen, S.-E., & Mujica, A. (2006). El tarwi (Lupinus mutabilis Sweet) y sus parientes silvestres. In M. Moraes, B. Øllgaard, L. P. Kvist, F. Borchsenius, & H. Balslev (Eds.), Botánica Económica de los Andes Centrales (pp. 458–482). Universidad Mayor de San Andrés, La Paz. ↩
4
National Research Council (1989).Lost Crops of the Incas: Little-Known Plants of the Andes with Promise for Worldwide Cultivation. Washington, DC: National Academies Press. Archaeobotanical context for Andean legume domestication, including Lupinus mutabilis. ↩
5
Food and Agriculture Organization of the United Nations (FAO). Reports on Andean grains and traditional crops, including Lupinus mutabilis, quinoa, and amaranth. Various years. ↩
6
Shah, A., & others. Research on the effects of altitude, UV exposure, and volcanic soils on the composition of Andean crops. Published variously in peer-reviewed agronomy and food science journals. ↩
7
Graham, P. H., & Vance, C. P. (2003). Legumes: Importance and constraints to greater use. Plant Physiology, 131(3), 872–877. Overview of legume biology, nitrogen fixation, and agricultural role. ↩
8
Eurofins Scientific (2025). Certificate of Analysis CPP5LBPC — Mikuna Pure Chocho Plant Protein. Full nutritional panel, amino acid profile, pesticide screen, heavy metals, PFAS, and microbial analysis. Eurofins Scientific, November 2025.
9
U.S. Department of Agriculture. FoodData Central. Nutritional composition reference values for whole-food legumes and seeds used in the comparison table.
