Heat a large pot or Dutch oven on medium. Add butter, olive oil, onion, carrots, celery, garlic, paprika and a big pinch of salt and cook, stirring frequently, until onion is translucent, 5 to 7 minutes.
Add flour and stir for 1 minute. Add chicken broth and vinegar and stir until flour is incorporated.
Add chicken thighs, potatoes, green beans, heavy cream, sage, thyme, oregano, and 1 teaspoon each of salt and black pepper. Bring the stew to a gentle boil on medium-high and then reduce heat to maintain a simmer. Simmer, with the lid partially covering the pot, until the chicken is cooked through, about 20 minutes.
Transfer the chicken to a plate. Completely cover the pot with the lid and let the vegetables cook for 5 to 10 minutes, until desired doneness. Meanwhile, shred the chicken into bite-size pieces with two forks, then return the chicken to the pot. Season to taste with more salt and pepper. Serve warm, garnished with parsley, with lemon wedges on the side if desired.
From:
https://cooking.nytimes.com/recipes/1026609-chicken-stew