The phrase "gravy packet" refers to a small packet containing powder or granules that can be mixed with water or other liquids to make a thick sauce called gravy, often used for adding flavor to meats or mashed potatoes. Full definition
Clean - up needed in Aisle 9 — 3 year old having a meltdown after being in the store for 2 hours while Mom is looking for gravy packets. (attachmentparenting.org)
Honeysuckle White whole turkeys are also GF, as are Jennie - O, but their gravy packets are not! (miglutenfreegal.com)
And definitely steer clear of those gravy packets that come with some turkeys — they are sure to contain wheat flour. (surefoodsliving.com)