Marinades are mostly used to add a flavor to the meat and are usually made by mixing oil with some sort of an acidic ingredient (like soy sauce, lemon juice, or apple cider vinegar) and various spices and seasonings. The marinading time usually varies between 2 hours to 8 hours. On the other hand, brine is used to add moisture and properly salt the turkey meat by soaking it in a salty mixture for a longer period of time (usually 24 hours).