1: Harvest and sort your cassava to get the best
This is the last step in cassava farming and the first step in the process of garri production.
After harvesting your cassava from the farm, select only healthy whole roots that are appropriate for producing garri.
Because there is a need to select healthy cassava tubers, you need to sort your roots and pick the best ones.
After the sorting, transport the tubers to the cassava processing plant.
Step 2: Peel the Cassava Roots
When you reach the cassava processing plant, peel the cassava root using a knife.
You can also peel the roots before taking it to the cassava processing plant, especially if the processing plant has a good waste disposal system.
Some processing plants have complete cassava processing machines including peelers which you can use to peel larger quantities of cassava.
Step 3: Wash and clean the cassava root
Wash the fresh cassava roots in clean water to remove excess mud and sand.
Use a clean sponge or scourer to wash the cassava clean, removing extra peel, spots or dirt.
There is a special garri processing machine for this step too.
This step of Garri processing is very important so that the quality of the final Garri is without sand.
Step 4: Grate the Cassava Roots into Mash
The need to grate cassava roots into mash is to remove some cyanide from roots in the process.
In ancient times, people use a rough metal sheet to grate the cassava by hand. They usually sustain severe injuries on their fingers.
Nowadays, there is more efficient cassava processing machinery which is safer and easier to operate.
There are also locally fabricated garri processing machinery in Nigeria which you can get at an affordable price. However, the grating machine must be one with a stainless steel grating drum.
If you use a grater that is in any way less of stainless steel, you may be risking introducing rust and contaminating your product.
To grate the cassava using a cassava grating machinery, load the roots carefully on to the engine while is running to grate it into a mash.
NEVER Ever try to use your hands to force the roots deeper into the grater while it is still running!
OMG! I can’t imagine the gravity of injury you will sustain if the machine mistakenly grabs your hand.
Step 5: Ferment the Cassava Mash to Remove Hydrocyanic Acid
The essence of fermenting the cassava mash is to get rid of the hydrocyanic acid (HCN) which is natural in cassava tubers.
You must control the fermentation process properly because if you leave it to ferment for a very short period, it will result in incomplete detoxification and a bland product.
If you leave the cassava mash to ferment for too long a period, it will give the product a strong sour taste.
So, both over-fermentation and under-fermentation of garri will greatly affect the texture of the final gari.
How to Ferment Cassava mash in cassava processing
Collect the cassava slurry into a clean polythene sack.
Tie the sack using a very strong chord
Arrange the sack of cassava slurry in the fermentation rack.
Allow it to stay for one or more days to ferment
While waiting for the garri to ferment enough, prepare the press for pressing.
Step 6: Press the cassava sack to drain the water in the garri
Before going into sifting and frying the garri, you need to drain the water completely.
You know you can’t achieve that by squeezing the bag of garri with you hands.
So, you have Load the bags directly on to a hydraulic press and tighten it very well.
Some people, especially those in rural areas, use wood and strong chords to tie the bag of garri. Some, place a heavy stone on the bag of garri to increase the pressure.
This is a very slow and unhygienic method of draining water from your garri. It is not a good method for a commercial garri producer.
The key thing to note in this step is to find that perfect moisture balance for the garri.
If after pressing the garri mash it is too wet, it will get lumpy during roasting. Also, if it is too dry, it will be too floury and dustlike.
How to know that the garri is ready for frying is that it will form a firm wet cake inside the bag.
Another way is when no more water comes out of the bag, it means that the garri is ready for the next step.
You will need to break it apart so that it comes out in smaller blocks which you can crush with your hands for sifting.
Step 7: After draining the garri mash, sift the wet cake into grits
In this step, all you have to do is to take out the wet garri cake and break it down with your hands.
What you will have will be grits of garri. Using a sifter, sift the garri grits to remove the lumps and fibrous roots it contain
Step 8: Fry or roast the grits to form edible garri
To fry the garri, gently spread some quantity of the grits into a frying pan or a garri fryer made of stainless steel material.
A garri fryer can make use of electricity, natural gas, firewood or charcoal as the heat source.
Whatever the source of heat is does not matter, what matters is the consistency of the temperature.
Use a temperature of 80 ºC/175 ºF to fry the garri until it is okay for removal.
If you use lower temperatures, the product will simply dry up slowly and produce a dry white powder.
Also, if the temperature is too high, it will result in charring of the product and it will make it stick to the roasting pan.
One thing you must do is always stir the garri until it is ready for evacuation from the fryer.
Doing this will make the heat spread uniformly throughout the garri roasting process.
How to know that your garri is ready after roasting?
Scoop a little quantity of the garri out of the fryer
Let the hot garri cool down a little
Handle it with your hand and judge; if it is dry and crispy, then it is ready for evacuation, otherwise, continue frying.
When the garri finally gets the right texture, scoop everything out of the fryer and repeat the process of frying another quantity of garri until you finish everything.
Step 9: Spread the garri in a thin layer and allow it to cool
After roasting the garri, spread it in a thin layer on a platform that is higher than ground level and allow it to cool.
The reason for spreading the garri on a high platform is to prevent sand from entering into it.
Also, when you are cooling your garri, make sure the environment does not have high humidity.
Garri is hygroscopic, meaning it absorbs moisture from the air.
As a result, you must ensure that the humidity of the environment is conducive and dry enough for the garri.
Step 10: Sieve or grind the garri to break larger granules
As soon as the garri becomes cool enough, use a sieve to remove larger granules in the product.
Alternatively, you can use a grinder to breakdown the larger granules into smaller ones.
Some people just pack everything the way it is.
In fact, a woman once told me that if you make eba (garri pasta) it rises better when it has granules.
There’s no justification to her claim anyway. If it’s true, please share in the comment. Thanks.
Step 11: Pack the garri in airtight bags and store properly
You have come to the final stage of this guide for cassava processing into garri.
Because of the hygroscopic nature of garri, it should be packed in airtight and moisture-proof bags.
This is very important especially in areas of high humidity, to prevent mold growth.
Pour the fine Garri into a plastic lining inside a woven polythene sack and store in a cool dry place.