Trim meat of excess fat. Brown meat on all sides with oil in a large, heavy pot over high heat.
Reduce heat and stir in onion chunks and bell peppers. Cook until onions are translucent.
Stir in remaining ingredients except salt, pepper, and Crisp Onion Strings. Partially cover and simmer until meat is tender, 1¼ to 1½ hours. Season to taste with salt and pepper.
To serve: Ladle 1½ c. stew into each bowl garnish with Crisp Onion Strings.