Quail, like other poultry, is prone to becoming tough and dry if you overcook it. And, because quail is smaller than chicken, turkey and duck, it's easier to overcook. Brining -- the process of soaking meat in a saltwater solution -- provides a good deal of protection against the undesirable effects of overcooking. Also, like marinating, brining gives you an opportunity to impart extra flavor into the meat. A properly made brine should help you turn out juicy, delicious quail, no matter how you're cooking it.
Fill a large container or bowl with enough cold water to fully submerge the quail you're brining. Usually, 1 gallon of water should be enough. Clear out some space for the brining vessel in the refrigerator.
Add in about 3/4 cup of table salt without iodine or about 1 cup of kosher salt per 1 gallon of water. Salt quantities don't have to be exact, but using more is likely to make the small birds too salty. Mix in the salt gently until it's dissolved. This is technically all you need to brine the quail. Adding seasonings will further flavor the poultry and keep it juicy.
Add 1/2 cup sugar or another sweetener for each 1 gallon of brine. The sweetness help offset the saltiness imparted into the quail. Instead of white sugar, try the same amount of brown sugar, honey, molasses, maple syrup or fruit juice. Quantities don't have to be precise, so go by taste and how sweet you want the quail to be.
Add other seasonings in the brine, if you wish. Ideas include minced garlic, onion, oregano, rosemary, basil, sage, thyme or bay leaves. Add them to taste or according to your recipe.
Submerge the quail in the brine and soak it for one hour in the refrigerator. Longer brining may make the meat too salty, since these birds are relatively small. If, after trying this process once, the quail doesn't seem as salty and juicy as you want it, brine it for another hour next time.