Combine the soaked beans and vegetable broth in a pot. Bring the mixture to a boil, then reduce heat and simmer for 1 hour.
Add the smoked turkey, celery, onions, jalapeƱos, and minced garlic to the pot.
Stir in all the spices (mustard powder, cayenne, garlic powder, onion powder, and chili powder) along with the bay leaves.
In a separate small pan, melt the butter and whisk in the flour to create a roux (or you can skip the roux and simply add the flour directly to the pot, whisking to remove lumps). Add this to the bean mixture.
Continue to simmer until both the beans and the turkey are tender.