Preheat oven to 350 degrees
Add olive oil to stew pot and heat
Add onions and saute for 5 minutes
Stir in garlic for 1 minute until fragrant
Add tomatoes and simmer for 5 minutes
Add all the other vegetables to the pot, stir well, cook for 10 minutes
Add flour to vegetables, cook for 2-3 minutes
Pour in 2 cups of broth to almost completely cover vegetables (more if necessary)
Sprinkle in rosemary and add bay leaf
Bring pot to a simmer then add in the pork and stir
Cover pot and place in to the oven for 1 1/2 hours
Check contents of pot after 1 hour of cooking. Add more liquid if needed