Brining Pork Turns Meat Grey

I suggest reading this Cook's Illustrated - The Basics of Brining (PDF) article. I use their basic brine all the time.

This article taught me two cool things I didn't know about brining.

1. Adjust the amount of sugar & salt downward for high heat applications.
   • Decreasing the amount of sugar ensures that the exterior of the meat doesn't burn. Prior to learning this I had a few "issues" with this mishap
2. Air drying chicken and turkey in the fridge after brining allows the skin to dry out, enabling it to crisp nicely when cooked.

If you aren't familiar with Cook's Illustrated, they bill themselves as America's Test Kitchen. They will take a recipe and beat on it with dozens or more variations tweaking and analyzing it as they go, until they come up with the "ideal" something or other. In this case, it's brining.

With this as a base you have a lot of opportunity for experimentation. I usually add very hearty aromatic spices to mine. Some possible additions and substitutions:

• Whole peppercorns
• Ancho chiles
• Whole Allspice
• Cinnamon
• Cloves
• Candied Ginger
• Brown sugar in place of sugar
• Substituting some vegetable stock for water **Use the lowest sodium stock possible, and adjust salt accordingly. I don't have a hard-and-fast rule here, but I tend to go with about 20% less salt than the "basic", more or less.

Another thing addressed by this article is what meats should and shouldn't be brined. The short version is lean mild meats are suitable for brining, fatty meats or those often cooked rare/med-rare do not benefit.

Suitable

• Cornish Hen
• Chicken
• Turkey
• Pork
• Some seafood
  • Whole side of salmon (grill roasted or smoked)
  • Shrimp

Unsuitable

• Beef
• Lamb
• Goose
• Duck

I suspect that the biggest problem here is that your brine isn't anywhere close to being strong enough. Cooks Illustrated has a good guide to the entire process but in a nutshell:

• Sea salt is expensive and inefficient for brining; the impurities actually make it more difficult to dissolve and disperse properly. Kosher salt is generally recommended, although table salt is also fine.

• A typical brine is 1/4 cup table salt and 1/2 cup sugar per quart, which translates to about 70 g and 140 g respectively per L. For very high-heat methods (grilling/broiling), you halve the amounts. Also, for kosher salt you need to double the volume (no change if measuring by weight). Even the lower, high-heat cooking concentration is almost twice as concentrated as what you're doing.

• You also need to scale the amount of brine with the weight of the bird itself. The rule of thumb is 1 quart or L per pound (2.2 kg) of meat. For a whole chicken, which is generally around 6 or 7 pounds, 1.5 L of brine is nowhere near enough, especially if you're brining in a pot as opposed to a bag (does your 1.5 L even cover the chicken?).

• It doesn't really matter if you butcher the chicken first (although most people don't). You're exposing slightly more surface area that way but not really enough to matter.

• Make sure you are actually dissolving all the crystals! From what you're describing, you're getting high concentrations of salt in some areas and none in others. That means you didn't get proper dispersion. You really need to make sure that all of the salt (and sugar, if you're using any) is completely dissolved, otherwise you don't have a "brine", you have water with a bunch of little piles of salt. Some people will suggest heating or even boiling your brine to ensure proper dissolution; just make sure you let it cool off afterward if you do this, before submerging the bird.

In answer to your specific questions:

1. The container should be well-sealed to prevent evaporation, not to mention off-odours in your fridge. However, I've used pots with loose-fitting lids and had no problems. It doesn't make a huge difference as far as the efficacy of the brine.

2. Fridge temperature is ideal. Do not even think about using room-temperature water, that is highly unsafe for storing raw meat for 6-8 hours at a time.

3. As long as you don't overcrowd the vessel and do disperse the crystals properly, the actual amount of space is not a major issue. If it's exposed, it's exposed.

4. Longer than 12 hours is not recommended. Actually, according to CI, longer than 8 hours is not recommended. Don't overdo it - you're brining, not marinating.

5. No matter how you cook any piece of meat, it will give up a certain amount of water and therefore a certain amount of salt (from the brine). Left unstated is why you would even consider boiling a brined chicken; brining is primarily a technique for dry-heat cooking (roasting/grilling), and if you want to boil/poach/braise/whatever then you should be focusing more on flavouring the cooking liquid than the meat itself. I wouldn't bother brining if you're making chicken soup, there are better ways to flavour that.