Heat oven to 275 degrees.
Heat the fat in a large Dutch oven over medium-high heat. Season short ribs on all sides with 1 tablespoon of smoked salt and a teaspoon of pepper. Sear short ribs on all sides until golden brown, about 2 minutes per side, working in batches if needed.
Reduce heat to medium, and add garlic and onion, cook for 5 minutes. Season with 1/2 teaspoon salt. Add tomato sauce and stir to coat. Continue to cook, stirring occasionally, until tomato sauce has started to caramelize a bit on the bottom of the pot, about 2 minutes.
Add the broth and stevia glycerite. Using a wooden spoon, scrape up any browned or caramelized bits. Bring to a simmer, then cover and transfer to oven.
Cook, undisturbed, until short ribs are meltingly tender and falling off the bone, about 3½ to 4 hours.
Remove from oven and serve.