In the same pot (don’t wipe it out — those browned bits are flavor!), add the diced onion. Cook for about 8 minutes until softened and translucent.
Add diced celery and carrots. Cook another 3–5 minutes.
Stir in the smashed garlic and tomato paste. Cook for a few minutes more until fragrant and slightly caramelized.
Pour in 2 cups of Cabernet Sauvignon. Bring to a boil, then reduce to medium and simmer for 15–20 minutes, until the wine reduces by about half.
Add Broth and Herbs
Stir in:
* 3 cups beef broth
* 2 bay leaves
* 1 teaspoon thyme
* ½ teaspoon Italian seasoning
Return the short ribs to the Dutch oven. The liquid should mostly cover the meat.