These melt in your mouth Irish whiskey braised short ribs are delicious served over a scoop of mashed potatoes slathered in a deep, rich sauce.
Preheat oven to 350 degrees F. Generously season the short ribs with kosher salt and pepper. Dredge the short ribs in flour.
Heat the oil and butter over med/high in a dutch oven or heavy bottomed pot. Add the floured short ribs and brown on all sides, about 10 mins. Remove to a plate.
Add the carrots, celery and shallot wedges to the pot. Season with kosher salt and pepper. Saute until the vegetables are softened and beginning to caramelize, about 10 mins.
Add the garlic and saute 2 mins longer. Stir in the tomato paste, brown sugar, and Worcestershire sauce and cook for 2 mins.
Deglaze with 1/2 cup Irish whiskey. Bring to a boil and reduce by half. Stir in 3 cups beef stock and bring to a boil. Season with kosher salt and pepper.
Reduce to a simmer and nestle the short ribs and ay accumulated juices into the pot with the thyme sprigs. Cover and braise in the oven for 2 - 2 1/2 hours or until fork tender, turning occasionally.
Remove the dutch oven from the oven and carefully remove the short ribs to a plate and cover tightly.
Strain the vegetables from the braising liquid. Pour the braising liquid into a fat separator or simply strain off as much fat as you can with a ladle or spoon. Pour the strained liquid into a small saucepan, add the additional whiskey, and stock.
Season the sauce with salt and pepper and bring to a boil. Continue to boil until you reach your desired consistency for the sauce. Serve the short ribs with the sauce spooned over the top.