Combine the Essence, flour, and beef cubes in a bowl. Toss to coat well. Add the oil to a pressure cooker
and heat over medium-high heat until hot. Add the meat and cook, turning occasionally, until evenly brown, about 5 minutes. Transfer the meat to a plate and set aside. Add the onion, celery
, salt, pepper, and mushrooms and cook, stirring, until the vegetables are wilted, about 3 minutes. Add the browned meat, garlic, bay leaf, thyme, rosemary, red wine
, and broth. Cover the pressure cooker and cook for 20 minutes, turning down heat once a steady stream of steam is emitted from the valve.
Add the parsnips, turnips, and collard greens, stir well, and replace lid. Cook an additional 20 minutes. Garnish with chopped parsley and serve over rice.