If using uncooked chicken: Roast a chicken and shred, or melt 1 tablespoon butter in a large Dutch oven over medium high heat heat. Cube boneless chicken breasts in bite-sized pieces. Season chicken with salt and pepper, to taste. Add chicken to the pot and cook until golden, about 2-3 minutes; set aside.
Add 1/3 cup flour and stir constantly for 1 minute until golden.
Stir in 1/3 cup wine, scraping any browned bits from the bottom of the stockpot.
Add 6 cups chicken stock, bay leaf, diced potatoes, thyme, 3 tsp salt (or to taste), and 1/2 tsp black pepper. Bring to a boil then reduce heat to a simmer, partially cover and cook 12-15 minutes or just until potatoes are tender.
Add shredded chicken, green beans, frozen peas, and frozen corn, and 1/2 cup heavy cream. Bring back to a simmer and continue to cook for another 5 minutes or until peas and corn are tender.
Remove from heat. Stir in parsley and vinegar; season with salt and pepper to taste.