Last updated on October 31st, 2026 at 03:38 pm
Cassava peel is the brown skin and inner rind cut away before roots become garri, flour, or starch. Most small processors treat it as rubbish, yet properly handled peel can feed pigs and poultry, enrich soil, and even produce fuel.
Every root I process in Ntigha, Abia State, is peeled by hand with a kitchen knife, and the peels pile up very quickly.
Like most families here, we carry them to nearby farmland plots and leave them to rot into manure.
This hub explains what the peel is, how much processing leaves behind, and what it contains.
It covers the cyanide risk that makes raw peel unsafe, then summarizes each practical use with links to detailed guides.
Nutrient tables come from published feed research, so farmers and small processors can judge the peel’s real value before investing in any processing.
Table of Contents
What Is Cassava Peel?
The peel has two layers: a thin brown outer skin and a thicker white or pinkish rind beneath it.
Both layers come off together during peeling because the rind tastes bitter and holds more cyanide than the flesh.
Peels make up 5 to 15 percent of the root’s weight, according to Feedipedia’s datasheet on peel by-products.
Hand peeling with knives is still the norm around Ntigha, using the steps shown in peeling cassava the right way.
Larger processors use machines instead, as compared in the buyer’s guide to peeling machines for cassava.
How Much Peel Processing Leaves Behind
Fresh peel is heavy with water, so its weight shrinks sharply once it dries.
ILRI found that producing one tonne of peel mash for feed takes about three tonnes of wet peels, in a 2018 report from Nigeria.
Every garri shed, flour unit, and starch pit therefore generates peel faster than most households can use it.
Waste quantities per tonne, alongside fiber and press water, are compared in the hub on cassava processing waste.
Nutritional Composition of the Peel
The peel is mainly fiber and leftover starch, with small amounts of protein and minerals.
| Component | Dried peel (Feedipedia) |
|---|---|
| Dry matter | 87.4 percent as fed |
| Crude protein | 5.2 percent of dry matter |
| Crude fiber | 14.0 percent of dry matter |
| Ash | 5.8 percent of dry matter |
| Calcium | 4.5 g per kg dry matter |
| Potassium | 7.1 g per kg dry matter |
| Magnesium | 1.1 g per kg dry matter |
| Phosphorus | 0.8 g per kg dry matter |
Fresh peel holds only about 28 percent dry matter, so most of its weight is water.
Starch and fiber dominate, while protein stays low, which limits how each practical use below can work.
Cyanide: Why Raw Peel Needs Processing
FAO’s review of cassava toxic substances states that cyanide content is generally higher in the peel than in the flesh.
Feedipedia notes that well-processed peels generally fall below 50 mg of HCN per kilogram, which feed users treat as acceptable.
Sun-drying, ensiling, and soaking followed by drying all lower cyanogenic compounds before feeding.
Goat keepers in my childhood village blamed fresh peels and leaves for the running stomachs their animals suffered.
The chemistry behind each detoxification step is set out in the guide to removing cyanide from cassava.
Can People Eat the Peel?
No, the peel is not human food, and every safe cassava recipe starts by removing it completely.
Food Standards Australia New Zealand requires cassava to carry advice that it must be peeled and fully cooked before eating.
Online claims that peel helps weight loss have no human evidence behind them, as the review of peel and weight management explains.
Practical Uses of the Peel
Animal Feeds
Once grated, pressed, fermented, and dried, peel becomes an energy ingredient that can replace some maize in pig and poultry rations.
Safe processing steps, inclusion limits for each animal, and costs belong to the dedicated page on cassava peel for animal feed.
Compost and Organic Fertilizer
Peels left on farmland eventually return organic matter to the soil, which is the method my community has always used.
Open heaps rot slowly and attract flies, while a managed compost heap works faster and smells less.
Step-by-step composting methods appear in the guide to fertilizer from cassava wastes.
Biogas and Biochar
Wet peels can feed a biogas digester, producing cooking gas and a liquid fertilizer from the leftover slurry.
The design and feeding of digesters are covered in the practical guide to cassava biogas production.
Dried peels can also be charred into biochar, explained in the article on biochar from cassava waste.
What Happens to Peels in Ntigha Today
Most peels in my community still end up rotting on farms, because no one buys them and processing takes time.
Word around town is that newly opened pig farms want peels from processors, a report I still need to verify.
If that demand grows, collecting fresh peels and drying them quickly could become a small business for local youths.
ILRI estimated that turning peels into three million tonnes of feed yearly could create 100,000 jobs across Nigeria.
Conclusion
Cassava peel is the skin and rind removed before processing, making up 5 to 15 percent of each root.
It holds fiber, starch, and minerals, but more cyanide than the flesh.
People should never eat it, yet dried or ensiled peel can safely replace part of the maize in animal feed.
Peel also makes useful compost, biogas, and biochar when handled with care.
Around Ntigha, most peels still rot on farms, which leaves real income unused.
To discuss peel processing or training, contact Cassava Pathway through this website or WhatsApp.
Frequently Asked Questions
What exactly is the peel of a cassava root?
It is the brown outer skin and thicker inner rind removed before cooking or any processing.
It makes up 5 to 15 percent of the root’s total weight.
Is cassava skin edible?
No, the peel is unsafe for people, because it carries more cyanogenic compounds than flesh.
Always peel cassava completely, then cook the flesh thoroughly before you eat it.
Why do processors remove both peel layers?
The brown skin and the thicker inner rind both carry more cyanogenic compounds than the flesh.
Removing them together leaves cleaner flesh for garri, flour, and starch making.
What nutrients do the peels contain?
Dried peel contains about 5 percent crude protein, 14 percent crude fiber, and leftover starch.
It also supplies potassium, calcium, and magnesium, but very little phosphorus or protein.
Chimeremeze Emeh is a tropical crop farmer and chemical engineer from Ntigha, Isiala Ngwa North LGA, Abia State, Eastern Nigeria, specializing in cassava and palm oil, with over 30 years of hands-on experience growing, harvesting, and processing cassava. He grows TMS series, TME 419, and local traditional varieties on his own farms and operates a small-scale cassava flour and starch production business through Cassava Pathway, which he founded as a CAMA-registered agribusiness in 2024. He is also the founder of Palm Oil Pathway, where he applies the same tropical farming expertise. His farms are located in Ntigha, Abia State.