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A Little History
The first type was sold in the 2002-2004 time frame and was labeled product of the Philippines. In the 2005-2006 time frame, they sold a second type of coconut charcoal briquettes which was labeled product of Thailand. In 2007 they sold a third type of coconut charcoal briquettes labeled product of Indonesia. Finally, in December of 2007 they started selling sample boxes of another charcoal on eBay in USPS flat rate boxes. It appears that each time the product changed, it took a turn for the worse. The Philippine charcoal was a great product (we gave it our highest rating), low on ash, long on burntime, hard durable briquettes that survived shipping abuse. The Thailand charcoal produced large volumes of ash, and much of it arrived at customers' doorsteps damp, moldy and crumbled. The Indonesian charcoal produced the largest volume of ash we had ever tested, burned for a very short time, and the briquettes were fragile and subject to shipping damage. Finally, the eBay "Try it Yourself" charcoal again produced volumes of ash and burned for a short period of time.
Why A Belated Review?
Note that, to the best of our knowledge, this Thailand charcoal is no longer available and as we shall see, perhaps that is a good thing. But we don't want to give away the ending so let's start the review.
The Charcoal -- Packaging, Condition, Appearance
Our samples arrived via UPS with the original boxes packed inside of another box, all padded with styrofoam peanuts. As you can see in our photos, it arrived in pretty good condition. We were relieved to find that we had a sample in reasonably good condition. As you can see, there is some crumbling, but most of the product arrived intact, and thankfully there was no mold:
Posts to the Kamado website by the owner indicate that at one time, some of these boxes were "slightly under" the advertised weight of 16.5 pounds. This was allegedly fixed so that subsequent shipments were "slightly over" 16.5 pounds. This sample came from "significantly under" 16.5 pounds group:
As you can see, Kamado was once again shipping underweight boxes of charcoal (see our review of the Kamado 2007 Tamarind Lump Charcoal)! This is even more concerning considering (as we shall see in a bit) the charcoal is filled with moisture, meaning that you are getting quite a bit less product than you thought you were.
The 7.4% fines is very good for a normal lump charcoal, but compared to the 2003 Philippine extruded coconut charcoal sold by Kamado, this is an enormous quantity of fines. Also, as we have seen before, the amount of "fines" you end up with is entirely dependant on the treatment your charcoal gets in shipping due to the fragility of the charcoal. It is possible that with some rough handling you could end up with a box of crumbled charcoal.
What about the physical appearance of the briquettes? These briquettes are straighter than the Indonesian and "Try it Yourself" briquettes as you can see in the photos below, but many of them suffered mild to moderate crumbling:
You will also notice that the length of the briquettes has increased from about 1.5 inches to about 3.0 inches. According to a post on the Kamado website:
To then calculate the volume of a hexagonal cylinder with a hole down the middle, you subtract the volume of the hole which is given by the area of the circle times the height of the solid, or 3.14 x R**2 x H, where R is the radius of the hole.
Also, if you take two of the Philippine briquettes and grind the ends against each other, the ends don't crumble all that quickly. If you do that with this Thailand charcoal, it quickly and easily crumbles.
We also calculated the density of this new charcoal and it is quite a bit more dense than any of the other coconut briquettes sold by Kamado. We attribute this to the moisture content of these briquettes, as well as the quantity and weight of binder contained in these briquettes, which we will address later in this review. (To calculate the density of the briquettes, you merely need to calculate the volume of a hexagonal cylinder with a hole down the center, which we explain in the table to the right. Then you divide by the weight of the briquette and you have the density.)
Burntime
A few other observations about burning. This charcoal was the most difficult charcoal to start we have ever seen, taking 10 sheets of newpaper to get a fire started in the chimney starter test. Again, we will attribute this poor performance to the moisture content of the charcoal. More on this later.
The fire is extremely slow to spread and the charcoal cannot burn hot for very long due to the ash buildup on the briquettes. (More on ash in the next section.) In our burntime test, we essentially use a BBQ Guru set on 400 degrees and then burn a fixed weight of charcoal. This charcoal could not get the fire up to 400 degrees! Even with a BBQ Guru 10CFM blower going full time in a small Big Green Egg cooker! Also, as the ash built up on the briquettes, the temperature would drop, requiring constant fiddling with the fire to keep the temperature up. We have never seen anything like this before.
Ash Production, Ash and Moisture Content
The explanation is simple. We normally measure ash by volume since volume is what can clog the air vents on your cooker and snuff your fire. Ash content, on the other hand, is measured by weighing the ash after the charcoal is completely consumed.
Since the ash produced by some of these Kamado coconut charcoal briquettes is so staggering, we thought we would measure the ash content in addition to volume. So, while the volume of ash produced by this charcoal didn't set a new record, the weight of the ash was staggering!
Now try to imagine the quantity of ash that would be produced by a cooker filled with these briquettes for an overnight cook. Truly staggering. We were barely able to keep our large Big Green Egg cooker going for an overnight cook with the 2007 Indonesian charcoal before the ash completely blocked the airflow. With this charcoal producing huge volumes of charcoal per hour of burntime, we feel it is not be usable for long overnight cooks except in cookers capable of dealing with unusually large volumes of ash.
One final test we conducted was to determine the ash and moisture content of the charcoal. To calculate the moisture content, we heat the charcoal in an oven at 300 degrees until the weight of the charcoal no longer decreases. The weight loss as a percentage of the initial weight is the moisture content. We measured the moisture content of this charcoal at about 8.1%.
Then to determine the ash content we burn the now dry sample in a closed cooker with adequate airflow and measure the final weight of the ash left over after burning. The Food and Agriculture Organization of the United Nations report on charcoal indicates that pure coconut charcoal contains about 1.5% ash. A survey of several coconut charcoal manufacturers reveals claims of ash content in the 1.8-5.0% range for their products. The ash content of this charcoal was a staggering 35.7%.
Our original tests indicated that the ash content of the Indonesian Kamado coconut charcoal briquettes was 18.2%. This is not surprising in view of the tremendous amount of ash it produces. The ash content of the original Philippine extruded coconut charcoal sold by Kamado was about 3.0%. Again, this is not surprising in view of the very small amount of ash produced by the Philippine charcoal. So to summarize:
So this charcoal is 43.8% moisture and ash! Think about that for a second. Nearly half the weight of this charcoal is water and ash.
Maximum Temperature
For this Thailand charcoal we measured 750 degrees with a Tel-Tru thermometer inserted into the dome of a medium Big Green Egg ceramic charcoal cooker. We have run this test on dozens of brands of lump and extruded coconut charcoals, and 750 degrees only ranks as "below average" on the range of temperatures that we have measured. Obviously, this is not "50% hotter" than other brands of charcoal. Also, this Kamado Thailand coconut charcoal does not burn "50% hotter" than the lowest maximums we have ever measured.
On the other hand, what if you interpret this statement to mean that the temperature of combustion measured right down in the burning charcoal is "50% hotter" than other charcoals? Although it is hard to imagine a charcoal that can't produce top temperatures in the cooking chamber could be actually burning at a higher temperature than other charcoals, we have the ability so let's look. Whereas this is not a test that we routinely run, we have run it against Kingsford briquettes and Royal Oak American hardwood charcoal.
So, how did we measure the temperature of burning charcoal down in the actual region of combustion? We simply piled up some charcoal in our medium Big Green Egg ceramic charcoal cooker, got it burning as hot as it can with the vents wide open, and then used a Thermoworks WD-08467-64 High Temperature Ceramic Fiber Insulated Probe inserted into the burning charcoal in the heart of the fire. This probe is capable of measuring temperatures up to 2500 degrees F. Here are the results we obtained:
So once again, Kamado coconut charcoal does not burn "50% hotter" than other charcoals, whichever definition of "burns hotter" you wish to use.
One observation we had made about the Indonesian coconut charcoal was it became very fragile after burning. After our maximum temperature test, we allowed the charcoal to cool and then we tried to stir the charcoal to knock the ash off for the next burn. What we found was that most of the charcoal briquettes crumbled to powder and thus were unusable. This new charcoal appears not to suffer as much from this fault. After our maximum temperature test was run and the charcoal cooled, we were able to stir it up and knock off the ash without destroying all the remaining charcoal. You need to be somewhat gentle with the charcoal, but careful stirring doesn't destroy the charcoal.
And finally, one last observation we made during the maximum temperature testing was something we have never seen before. When we completed the test by placing the ceramic top on the cooker and closing the lower vent, steam started to pour from the lower vent and between the lid and dome. We took the ceramic lid off and discovered it was dripping with water! We placed the lid back on the coooker and we could actually hear water hissing with steam as it dripped onto the fire. The moisture content of this charcoal is truly stunning, perhaps explaining the very poor performance on maximum temperature testing and burntime testing. You can't burn water!
Smoke and Odor
One additional observation we made regarding the smell of the smoke was again something we have never seen (smelled) before in a wood or coconut charcoal. The smoke coming off this charcoal as it burns stings the eyes and burns the throat. It is truly unpleasant and calls into question what might be in this charcoal. The only other charcoal that has ever produced this kind of unpleasant smoke is the new Kingsford with its Sure-Fire grooves. Truly an unpleasant experience.
Additives and/or Fillers
This explains the wide variation in ash production and burn times between the different types of coconut briquettes that Kamado has sold. The different manufacturers who have been supplying Kamado with coconut briquettes have apparently been adding various amounts of filler to their products, despite Kamado's claims that their coconut briquettes contain no filler. It also explains how Kamado was able to reduce the price of their charcoal from $11.99 in 2003 for the high-quality Philippine charcoal to $7.99 in 2008 for their current low-quality charcoal.
Conclusion
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Other Information
Unusual or Unique Statements
Statements From The Bag
Lighting Instructions
Photos Of Contents
See Review.
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About This Review
If you are unfamiliar with our testing procedures, you may wish to read
How We Review Lump Charcoal before reading this review. Also, you can read
How We Score Lump Charcoal to learn about our scoring system.
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