Preheat oven to 300 degrees. In a saucepan over med-low heat, simmer beer and reduce to approx. 11/2 c. Slice sausage lengthwise, then cut into 1/2” pieces. In an oven-safe pot, warm oil over med-high heat, add sausage and saute until browned. Remove sausage from pot and set aside. Cut pork into 11/2” pieces and season with salt and pepper. In two batches, add pork to pot and brown on all sides. Set aside. Add onion and garlic and saute until browned, approx. 4 min. Add flour and whisk constantly, incorporating any brown bits to create thick paste, or roux, and cook 2 min; being careful not to burn. Add beer reduction to deglaze pan, scraping the bottom of the pot to loosen any bits. Add chicken broth, vinegar, herbs, peppercorns and caraway seeds. Season with salt and pepper and bring to a boil while stirring. The liquid will thicken slightly. Return pork and sausage to pot. Bring to a boil, cover and place into pre-heated oven, cooking for 1 1/2 hr. Add yam, rutabaga, cabbage and kale and return to the oven for 45 min, or until vegetables are tender. Spoon into serving bowls and garnish with chopped parsley.