Sear the Meat: Heat a heavy skillet on your stove until it is dry and hot. The pan must be hot enough to immediately sear the outside of the stew beef, locking in the juices and browning the surface rather than letting the meat steam in its own liquid. Add the beef, season with salt and pepper, and brown all sides thoroughly.

Deglaze the Skillet: Transfer the seared meat directly into your deep roaster oven or large stockpot. Pour a splash of water into the hot skillet, using a sturdy spoon to scrape up all the dark, cooked-on meat bits stuck to the bottom of the pan. Pour this rich deglazing liquid straight over the meat in the roaster to guarantee a deep color and savory foundation.

Incorporate the Soup and Roots: Pour the 4 quarts of French onion soup and 2 quarts of water over the beef. Add your prepped potatoes, carrots, and turnips into the liquid.

Chop and Add the Herbs: Take your fresh basil, thyme, winter savory, parsley, and oregano, give them a quick rinse, and chop them finely straight into the pot.

Add Celery: Wash, slice, and add your celery stalks to the mixture to round out the traditional aromatics.

The Slow Simmer: Set your roaster to low and allow the stew to slow-cook steadily overnight, targeting a full 24 hours of total cook time. This extended window completely breaks down the fibers of both the older storage roots and the stew meat, resulting in a tender finish and a thick, savory gravy.