the Brazilian brand of which he wrote.
Brazilian ChickenI know this is an old topic but I have good info to share on this subject. In my old life we used tons of Brazilian chicken breast meat every day.
At the time (and maybe this is still the case), the EU imposed different tarrifs on different types of chicken meat imports from outside the EU. One way to achieve a lower tarrif was to "process" the breast meat in some way.
The Brazilian supplier would add 1.2% salt to their breast meat. Now for those who don't know, a reasonable level of salt in a meal is somewhere around 0.5-0.7%. Once you get up to 1.2%, the product starts to taste "salty". Obviously those who designed the tarrif criteria knew this, and knew that this "salted chicken" would not be acceptable to the average housewife/husband, and thus the tarrif helped protect the EU chicken industry.
We used to use this salted chicken in chicken nuggets, burgers, etc. The factory recipe called for 0.6% of salt in the meat mix. This was easily achieved by mixing half a ton of 1.2% salted chicken with half a ton of "normal" chicken. The resulting meat mix had 0.6% salt, bang on target.
Now this Brazilian 1.2% salted chicken breast meat also found its way in to the food service sector, i.e. those companies that supply the restaurant trade. The substantially lower cost was unresistable for many. I can, and have, noticed this salted chicken being used in curries. Questioning the owner and they admit, yes, it is Brazilian salted chicken, but the price is too good to resist. And anyway, most customers just don't notice it.
Salting chicken can help tenderise it, and this could be one reason why some people wonder why their home-cooked chicken doesn't have the same mouth-feel.
How to get the best results at homeThe first thing to realise is that the root cause of "tough chicken" could be totally out of your control.
During the slaughter process, birds are first stunned before having their throats cut, and then they are hung upside down to bleed out. The two main types of stunning are electric and gas (pretty much like your cookers in the UK

). Electric stunning can be problematic if the stun isn't applied properly and at the right level. It can cause the muscle to seize up, resulting in tough meat.
There is also a second theory about the stress level of the birds at point of slaughter, but there was less hard evidence for this.
Guidelines to maximise chance of tender chicken1. Start off with good raw material. Buy fresh chicken where you can, from reputable suppliers that have full traceability of their supply chain. Cheap chicken is cheap for a reason. Cuts are made in the supply chain, processes are not controlled and audited to the same level.
2. Try to avoid cooking twice. You're just doubling the opportunities to dry out your chicken. Freezing in itself also causes loss of moisture.
3. Invest in a digital probe cooking thermometer. 8