For a breast that Would be too long IMHO. That would be perfect for a whole bird though.
This might be helpful.
It all depends (don’t you love that answer)? The size of the item your brining, the relative strength of the brine and your individual preferences will all make a difference. I highly recommend you experiment, keep good notes and you’ll determine your own answer. Before you experiment, read the Questions and Answers chapter for some ideas and concerns about changing times and solutions.
These are “sample” times. Feel free to adjust –SLIGHTY- but remember:
If you’re worried about your first brine, go with a time in the middle of the range. If that was too salty, try lowering your time. After than, you can adjust your solution if you still think it’s too salty (see the Q&A section for more).
Item
Brine Time
Whole Chicken (4-5 Pounds)
8 to 12 hours
Chicken Parts
1 1/2 hours
Chicken Breasts
1 hour
Whole Turkey
24 - 48 hours
Turkey Breast
5 - 10 hours
Cornish game hens
2 hours
Shrimp
30 minutes
Pork chops
12 - 24 hours
Pork Tenderloin (whole)
12 - 24 hours