NOTE: DON'T OMIT ANY INGREDIENT, TO MAINTAIN THE PROPER RATIOS AND MEASURES OF THIS BULK MIX. (STEP ONE): MEASURE all ingredients into large resealable container such as a GLAD food storage container or a Ziploc freezer bag.
BREAK up any clumps if present, by hand or using the back of a spoon.
SEAL the container.
SHAKE container to mix well.
STORE container sealed and store in a cool dry place.
WHEN ready to use, measure 5 level tablespoons of this mixture into a large resealable container.
ADD 1 cup all-purpose flour and 1/2 cup cornstarch.
SEAL container and shake well.
FOLLOW link to Hometown Buffet Fried Chicken (Copycat) for complete brining, preparation and frying instructions (skipping its STEPS #2 and #3 since you've already done this).