Eco-friendly kilns help Malawi’s fish curers cut losses

Closing his eyes as he battled smoke wafting from fish-smoking kilns in front of him, Issah Amin put more wood into one of seven ovens at Chikombe beach, a fish-landing site on Lake Malawi.

“This is one of the hardest parts of this work,” Amin said, his eyes teary as he poked the firewood to stoke the flames and cure the fish, laid out on wire mesh on a platform made from bricks.

“But if I don’t do it, I won’t take the fish to Lilongwe [Malawi’s capital],” he said as he sat back to watch the flames. “It will be rotten and my business and my livelihood will be dead.”

On beaches along Lake Malawi, the country’s largest fishing ground, and other fishing sites across Malawi, this laborious and smoky curing method is the norm.

But the approach is not only back-breaking and hazardous to health, it is also wasteful. High firewood consumption and significant post-harvest losses plague the industry.

A study assessing the economic impact of post-harvest fisheries losses found staggering wastage: 43% at the beach, 54% during processing, and 69% during marketing.

While the economic losses may be relatively modest, the study warned of high potential for health risks and loss of nutritional value.

Researchers launched a project in 2024 to reduce these losses and improve the livelihoods of processors.

They developed modern fish-smoking kilns, which are clean, enclosed systems that retain heat, consume less firewood, and are easy to operate.

James Banda, principal investigator on the project, said the kilns are efficient at removing moisture and significantly reduce smoking time.

“The kilns can process 100 kg of fish in two hours,” he said.

Banda said the kiln was designed to collect fish oil that drips out during smoking—an added by-product that processors can sell or use, increasing the value of their work.

The kiln controls heat and smoke distribution and ensures the fish are evenly smoked, resulting in better taste, texture, and a longer shelf life, according to Banda, who is also a principal research officer in the Ministry of Agriculture.

“We designed the new kilns with better hygiene standards, reducing contamination risks and ensuring safer fish products,” he added.

“These advancements make the modern fish smoking kiln a valuable upgrade for improving productivity, quality, and sustainability in fish processing in Malawi.”

Poverty reduction

According to Malawi’s 2021 Annual Economic Report, fish contributes over 70% of dietary animal protein for Malawians and 40% of total protein supply.

In 2020, more than 65,000 people were employed as fishers, while another half a million people were indirectly employed in the industry, through activities such as fish processing, fish marketing, and boat building, the report says.

Banda believes the sector holds real potential for poverty reduction.

“Improved fish processing methods will help value chain actors, such as women and youth, to mitigate their vulnerability and adapt to extreme shocks and fish losses, boost their productivity and improve their livelihoods,” he said.

The project is working to reach 500 direct beneficiaries in Mangochi, one of Malawi’s key fishing districts, aiming to cut post-harvest losses by 15% and improve kiln adoption by 15% by 2026.

Ellack Dyton, an extension worker on the project, has been training fish processors on kiln construction, use, and fish handling from landing sites to markets.

“So far, the response has been impressive,” Dyton said. “What has endeared the technology to the processors is reduced firewood and less labor because now they can put fish in the kilns and engage in other activities.”

Hee admits that a “change of mindset” is still needed, adding: “When innovations like this come up, some will always hesitate to adopt. But there is significant interest to adopt this technology and that encourages us.”

Scaling up

Environmentalist Charles Mkoka, who has worked on fish-processing initiatives in Malawi, says the technology offers huge market potential.

“The process assures food safety standards for local and regional markets,” said Mkoka, who is the executive director of the Co-ordination Unit for Rehabilitation of the Environment, or CURE, a local environmental group.

He says it means processors can tap into export opportunities within the Southern Africa Development Community or Common Market for Eastern and Southern Africa.

He added, “Such improved technologies reduce labor and health burdens and create more income-generating opportunities, especially for female-led cooperatives and youth enterprises.

“What now remains is to build their capacity and support formation of women-led and youth-led cooperatives for knowledge sharing and economies of scale.”

The researchers say they now aim to spread the technology to more landing sites across Malawi.

“Our aim is to share with other districts across the lakeshore to enhance quality and safety of smoked fish products while reducing losses,” said Banda.

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