Step 3
Heat another tablespoon oil in the Instant Pot®; when oil shimmers, add mushrooms. Cook mushrooms, stirring occasionally, until slightly brown, 4 to 5 minutes. Add mushrooms to the bowl with the beef. Add 1 tablespoon avocado oil to the pot and cook carrots, onions, and celery until onions begin to soften, about 5 minutes. Add garlic and cook until just fragrant, about 1 minute. Pour in wine to deglaze the pot, scraping up any browned bits, and cook until wine has almost evaporated, 3 to 5 minutes. Return browned beef and mushrooms to the pot. Stir in barley, tomato paste, bay leaves, thyme, bouillon base, red pepper flakes, and beef broth. Stir until well combined.