@Val123 – Searing isn’t for looks. It’s for flavor. And salting or brining meat, especially lean meat without a lot of fat to melt into “juice,” does cause it to be juicier after cooking.
@all – I do know from personal experimentation that salting chicken with its skin in place about 24 hours before cooking will help the skin turn out to be very crispy after cooking. Also, soaking chicken in a light brine or in something like buttermilk causes the chicken to plump up and be jucier and more tender.
In addition, putting a roast in a crust of salt is supposed to act like a seal, keeping juices in as in this recipe. Cooks who keep Kosher will soak beef in cold water for ½ and hour or so, and then salt it and leave it sitting a while longer in order to draw out any remaining blood (it is forbidden to consume the blood of animals).
I recently read an article in a cooking magazine, but for the life of me I cannot remember what magazine or who wrote the article. However, the author had conducted experiments with salting various meats 24 hours before cooking and similar examples just before cooking and then comparing the results.
I did find this article which recommends salting lean meats such as turkey to make them moister after cooking.
The article says:
“Brining enhances juiciness in several ways. First of all, muscle fibers simply absorb liquid during the brining period. Some of this liquid gets lost during cooking, but since the meat is in a sense more juicy at the start of cooking, it ends up juicier. We can verify that brined meat and fish absorb liquid by weighing them before and after brining. Brined meats typically weigh six to eight percent more than they did before brining—clear proof of the water uptake.
Another way that brining increases juiciness is by dissolving some proteins. A mild salt solution can actually dissolve some of the proteins in muscle fibers, turning them from solid to liquid.
Of all the processes at work during brining, the most significant is salt’s ability to denature proteins. The dissolved salt causes some of the proteins in muscle fibers to unwind and swell. As they unwind, the bonds that had held the protein unit together as a bundle break. Water from the brine binds directly to these proteins, but even more important, water gets trapped between these proteins when the meat cooks and the proteins bind together. Some of this would happen anyway just during cooking, but the brine unwinds more proteins and exposes more bonding sites. As long as you don’t overcook the meat, which would cause protein bonds to tighten and squeeze out a lot of the trapped liquid, these natural juices will be retained.”