Thats depends on the ingredient list on the label on the frozen bird. If wheat or other glutten containing grains are used, then yes, the turkey does contain glutten. If none, then no. Always read the information label on all products you purchase for consumption by you and your family. Be aware and informed. It ks important to health and well being.
Marinating works best when it's done over night. Typically the longer it sits the more flavour it absorbs. If you plan on having your chicken for Friday nights supper begin marinating the chicken Thursday night. Be sure to seal the container tight while it is in the fridge to help prevent any danger of cross contamination.
Acidic marinades (those containing generous amounts of citrus) can make the chicken mushy if left too long. Two hours is sufficient to impart flavor without breaking down the flesh. Zip-lock bags work well for marinating. Be sure to squeeze out excess air when sealing.
Yes.It tenderizes by breaking down fibers. It adds volume by weight thru absorption.It infuses flavor.
You probably should not eat any kind of brush, horse hair or any other type.