Stuffing vs dressing is partly geography and partly how you cook it. Some families call it stuffing even when it never goes inside the turkey, and others would never call a cornbread side anything but dressing. Neither name changes the food-safety basics: if it goes in the bird, both the turkey and the center of the stuffing must independently reach 165 degrees F.

Quick overview: stuffing and dressing are made from the same basic ingredients, and what people call them depends largely on where they live, according to University of Arkansas Extension. Many cooks use “stuffing” for the version baked inside the bird and “dressing” for the version baked in a separate dish. USDA Food Safety and Inspection Service says stuffing must reach 165 degrees F in the center, however you cook it.

Stuffing vs dressing: what is the difference?
Both are usually seasoned bread mixtures, typically with onion, celery, and herbs such as sage and thyme. University of Arkansas Extension says what you call it depends on the part of the country you are from, with people in the South using “dressing” and people in the northern states generally saying “stuffing.” It adds that the most common Southern ingredient in dressing is cornbread, and that regional versions can include oysters in coastal communities, andouille sausage in Louisiana, and sourdough and mushrooms in California. USDA notes that stuffing can also include grains, pasta, fruits, vegetables, sausage, giblets and nuts.

Stuffing
Dressing

Common meaning
Often the version cooked inside the bird
Often the version baked in a separate dish

Regional use
More common in the northern states
More common in the South

Typical base
Bread cubes
Often cornbread in the South

Safe internal temperature
165 degrees F in the center
165 degrees F in the center

The first row is a common kitchen distinction, not an official rule. Some Southerners call a casserole-baked version dressing, and many families use the two words for the same dish. The safe temperature does not change with the name.
Is it safe to cook stuffing inside the turkey?
It can be, but it takes more care. USDA says the turkey and the stuffing must each reach a safe minimum internal temperature of 165 degrees F, so a finished turkey does not mean the stuffing is done. For optimal safety and uniform doneness, USDA recommends cooking stuffing separately.

Stuff loosely. USDA says to spoon it in loosely, about 3/4 cup per pound of turkey.
Keep it moist. University of Arkansas Extension says the stuffing should be moist, not dry, because heat destroys bacteria more rapidly in a moist environment.
Roast right away. University of Arkansas Extension says to put it into an oven set no lower than 325 degrees F immediately after preparing it.
Check both. Insert a food thermometer into the center of the stuffing and into the innermost part of the thigh and wing and the thickest part of the breast. USDA says all must reach 165 degrees F.
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