Pat the short ribs dry with paper towels. Heat a dutch oven or braiser over medium high heat, and add avocado oil. Add the ribs, and generously season with salt and pepper. Brown each side of the ribs. *Take your time and ensure the meat gets a nice dark color.* This will give the sauce a deep flavor! Remove the short ribs from the pot.
Drain all except about 2 tablespoons of oil from the pot. Add in the carrots, celery and onion. In Italian, this is called “Soffrito.” Brown the soffrito over medium heat, caramelizing the vegetables for about 10 minutes.
Add the garlic and tomato paste, and stir into the vegetables. Allow the vegetables and tomato paste to caramelize, leaving brown bits in the pan. This adds more flavor to the sauce. The soffrito, garlic and tomato paste should cook for about 25 minutes – don’t rush this step!
Deglaze the pan with red wine. Use a wooden spoon to scrape the bottom of the pan, to incorporate the browned bits with the sauce. Allow the wine to reduce by half. This takes about 5 minutes.
Add in the beef stock, parmesan rind, bay leaf, and bundled herbs. Nestle the short ribs back into the pot.
Cover the pot, and reduce the heat to low. Allow the short ribs to braise in the liquid for 3-5 hours. Smaller short ribs will take about 3 hours. If your ribs are cut larger, like the ones I used, it will take closer to 5 hours (boneless short ribs cook faster than bone-in ribs). After 3 hours, check your pot to make sure there is enough liquid, using beef stock to thin it if necessary. Check the meat to see if the bones easily detach from the meat. Continue cooking until the meat easily shreds with a fork.
Remove the parmesan rind, bay leaf, and herb bundle from the pot, and discard. Remove the short ribs from the pot. Place the meat on a cutting board, and shred it with two forks. If desired, remove the larger chunks of fat from the shredded meat.
Stir the shredded short ribs back into the pasta sauce. If desired, add a little heavy cream and parmesan to further deepen the flavors of the ragu.
Serve the ragu tossed with pasta, or over the top of polenta or rice. Garnish with parmesan cheese and freshly chopped parsley.