(CNN) — Like an inbox filled with emails about Black Friday sales, the one thing you can count on the day after Thanksgiving is a fridge packed with leftovers.

For many, this is easily the best part of the entire holiday — but at a certain point, even the most devoted leftovers fans will question if that side dish is still OK to eat.

Some answers depend on your family traditions: If your relatives like to leave the Thanksgiving feast on the table for all to snack on during the football screen fest, you're already in trouble. Bacteria grow fast.

All of the food should be wrapped up or put in airtight containers and stashed in the fridge within two hours of serving to keep food fresh and free from bacteria, says the United States Department of Agriculture.

Make your snacks from the fridge, not the table, is the advice.