The Potato Story: From the Andes to Chipsi Mayai
The Irish potato did not start in Ireland, and it certainly did not start in Tanzania. But over five centuries, it has become both — and the journey it took to reach the highlands of Mbeya is one of the great stories of African agriculture.
This is that story.
The Andean Beginning
Long before the potato carried the prefix “Irish,” it was a sacred crop of the Andes.
Domesticated between 7,000 and 13,000 years ago on the high-altitude plateaus around Lake Titicaca, the potato was the staple that allowed the Tiwanaku, Huari, and eventually Inca civilisations to flourish in environments where almost no other crop could survive. Andean farmers developed sophisticated cultivation systems and innovated chuño — a freeze-dried potato product that could be stored for years, providing a caloric buffer that fed armies and outlasted droughts.
The potato did what very few crops can: it produced three times the calories of grain on the same acreage, and it did so at altitudes most cereals cannot tolerate.
It was, in every sense, a highland crop.
The Global Journey
The potato’s global odyssey began with the Spanish conquest of the Inca civilisation in 1532. Spanish sailors carried the tuber back to Europe, where it spent its first decades as a botanical curiosity — distrusted, untaxed, and grown mostly in monastery gardens.
By the late 16th century, the potato had reached Ireland. The Irish climate and soil suited it so completely that within two centuries it had become the primary subsistence food for one-third of the Irish population. The dependency was so deep that when the pathogen Phytophthora infestans (late blight) arrived in 1845, it triggered the Great Famine of 1845–1852 — a catastrophe that killed roughly a million people, drove a million more into emigration, and permanently attached the word “Irish” to the potato in British colonial discourse.
It is that label that would, half a world later, accompany the tuber to the highlands of Tanganyika.
Arrival in Tanzania: The Colonial Era (1880s – 1961)
The potato came to mainland Tanzania during German East Africa (1885–1918), brought by missionaries and explorers who recognised that the cool, temperate Southern Highlands mirrored the ecological niche the crop had thrived in for millennia. Before 1914, German mission stations in Njombe and Mbeya had established small-scale cultivation in mission gardens, primarily to feed European settlers and mission residents.
Under British administration after the First World War, the potato began its transition from a garden crop to a commercial commodity. By 1928, Shamboa District was already exporting 84 tonnes of potatoes. African farmers in the highlands quickly recognised the opportunity: the potato allowed them to cultivate higher altitudes that were unsuitable for traditional grains, and it generated cash income in a colonial economy otherwise dominated by sisal, cotton, and coffee.
Variety names from this period — many referencing Kenya or Malawi — reveal a vibrant informal cross-border seed trade that long predated formal regional integration. African farmers were already operating regionally, decades before “regional integration” became a policy phrase.
The Nyerere Era: Socialism and State-Led Agriculture (1961 – 1985)
The potato’s post-colonial chapter is inseparable from Mwalimu Julius Nyerere and his vision of Ujamaa.
Independence and the First Plans (1961 – 1965)
At independence on 9 December 1961, the focus was on national unification and the transition from a colonial to a national economy. Potato production remained largely in smallholder hands in the Southern Highlands, operating outside formal state marketing structures.
The Arusha Declaration (1966 – 1970)
The 1967 Arusha Declaration fundamentally re-shaped the agricultural landscape. Nyerere’s policy of self-reliance led to the nationalisation of banks and major industries; agriculture was organised around communal villages. While potatoes were not yet prioritised as a major industrial crop, they benefited from the improved availability of fertiliser and credit through newly formed state channels.
Villagisation and the Birth of Uyole (1971 – 1975)
Operation Vijiji (1973–1975) saw the relocation of millions of rural Tanzanians into centralised villages. Critically, this era also saw the professionalisation of potato research. In 1972, negotiations between Tanzania and the Nordic governments — Denmark, Finland, Norway, Sweden, and later Iceland — led to the establishment of the Uyole Agricultural Centre (UAC) in Mbeya. UAC was mandated to conduct applied research on the major staples of the Southern Highlands, including potatoes, maize, and beans. Its first diploma and certificate students were enrolled in July 1975, creating the intellectual foundation that would eventually feed every modern reform of the sector.
Self-Reliance and Yield Plateaus (1976 – 1980)
By 1980, the Southern Highlands (Iringa and Mbeya) accounted for 90% of national potato production, yielding approximately 550,000 tonnes. But productivity remained low — under 10 MT/hectare — held down by a lack of clean, certified seeds and dependence on rain-fed systems.
The Crisis Years (1981 – 1985)
The early 1980s brought the global oil crisis, the Kagera War with Uganda, and the structural strain of the Ujamaa economy. Fertiliser subsidies, in place since 1976, became unsustainable. In the potato sector, farmers began relying increasingly on informal networks for seed and market access — the “silent revolution” that set the stage for the liberalisation to come.
The Liberalisation Decades (1986 – 2005)
Under Presidents Ali Hassan Mwinyi and Benjamin Mkapa, Tanzania transitioned from state-led socialism to a market-oriented economy. Structural Adjustment Reforms intensified after 1986; the monopoly of state marketing boards was abolished in the 1990s; fertiliser subsidies were entirely removed in 1995.
For the potato, two things happened:
First, rising urban demand drove a new wave of commercialisation. The cities — especially Dar es Salaam — were hungry, and the highland farmer had what they wanted.
Second, somewhere on a Kariakoo street corner in the 1980s, a vendor cracked an egg into a hot pan, dropped a handful of fried potatoes into it, and folded them together.
Chipsi Mayai was born.
The Tuber of Transformation: Chipsi Mayai
Chipsi Mayai — sometimes called zege — is a potato omelette so pervasive in Tanzanian urban life that it has become an unofficial national dish. It is sold at thousands of street stalls, in mama lishe kitchens, in late-night canteens, and in roadside cafés across the country.
It is also the perfect economic story.
Every Chipsi Mayai is a quiet handshake between a smallholder in Mbeya and a city worker in Dar es Salaam. It is highland soil, regional logistics, urban entrepreneurship, and Tanzanian appetite, layered into a single plate. Its variants — Chips Mwitu, Chips Mishkaki, Chips Kuku — show how creatively Tanzanians have built an entire informal food economy around the tuber.
The dish is also why this Council’s website lives at chipsmayai.com: because no symbol better explains why what happens on a farm in Iringa matters to a worker on Samora Avenue.
The Modern Strategic Era (2006 – 2024)
SAGCOT and the Corridor Vision
The launch of the Southern Agricultural Growth Corridor of Tanzania (SAGCOT) in 2010 under President Jakaya Kikwete marked a paradigm shift. SAGCOT, a public–private partnership, targeted the Southern Highlands as a primary zone for agricultural intensification. Potato production area grew at an annual average rate of 11%, and by 2012 over 700,000 households were involved in cultivation across 200,000 hectares.
Magufuli and the Seed Pivot
Under President John Magufuli (2016–2021), the Second Five-Year Development Plan focused on industrialisation. In 2018, Tanzania and the Netherlands signed a Memorandum of Understanding to develop the potato industry — the agreement that opened the way for registration of high-yielding Dutch varieties and accelerated TARI’s release of improved varieties such as Unica and Shangi.
From SAGCOT to AGCOT
On 27 April 2025, in a major institutional overhaul, the SAGCOT framework was expanded nationwide to become the Agricultural Growth Corridors of Tanzania (AGCOT). The Northern, Central, and Mtwara corridors were activated alongside the original Southern Corridor — and the entire programme was tied to a target of a USD 100 billion agricultural economy by 2050.
The Potato Council Is Born
On 27 June 2024, the Potato Council of Tanzania was officially registered, under the leadership of Chairman Beno Mgaya. For the first time, the sector had a single, legally constituted voice — and a clear mandate to harmonise activities, improve seed quality, advocate for fair trade, and build the institutional architecture the industry had lacked for a century.
Where We Are Now: Mid-2026
Under President Dr. Samia Suluhu Hassan, the potato sector has reached a level of strategic importance unprecedented in the country’s history. Agenda 10/30 targets a 10% annual agricultural growth rate by 2030. FYDP IV (2026/27 – 2030/31) commits TZS 10 trillion to NAGITA. The Agricultural Master Plan 2050 projects a USD 100 billion harvest.
And from 26 to 30 October 2026, Sub-Saharan Africa hosts the World Potato Congress for the first time ever — convening over 1,000 delegates from 60+ countries in Naivasha, Kenya. While the Congress itself is hosted in Kenya, Tanzania’s proximity, production scale, and established trade flows across Namanga and Holili place the Tanzanian sector squarely inside the regional story being told that week. The four AGCOT corridors will be sending delegates, exhibitors, and farmer leaders to make sure Tanzania is heard.
The 2050 Horizon
The Potato Council of Tanzania exists at this hinge moment in the story.
The next twenty-five years will be decisive. Climate models suggest yields could fall 75% in some seasons under high-emissions scenarios — unless irrigation, heat-tolerant genetics, and soil stewardship become the standard rather than the exception. The Master Plan 2050 envisions at least 50% of the potato crop processed into starch, frozen chips, or flour — a complete inversion of today’s raw-commodity dependence. The “Building a Better Tomorrow” programme aims to put 3 million young Tanzanians and women into agricultural enterprises by 2030.
The story that began on a Lake Titicaca shore 13,000 years ago, that survived a Spanish conquest, an Irish famine, a German colony, a British protectorate, an Ujamaa experiment, and a structural adjustment, now arrives at a moment when a Tanzanian smallholder can plausibly feed the East African region.
That is the story we are telling.
That is the story you are now part of.