On Saturday I was going to make fried chicken for dinner. I poured buttermilk over the tenders and put 'em in the fridge -- I'd fry them when my husband got home.
Well, the delightful man came home bearing gifts -- pizza. Hm... chicken tomorrow, then!
So I actually marinated the tenders overnight. I NEVER marinate stuff for 24 hours. 20 minutes... an hour tops... it gets the job done.
WHAT A DIFFERENCE!!! It was so juicy! It was so flavorful! It was tender! It was DELICIOUS!
Try to hold out a full 24 hours on your marinades. You won't be sorry :).