Alaskan Cod Chowder

Heat oil in a large pot over medium heat. Add onion and celery; cook, stirring frequently, until softened and beginning to brown, 3 to 6 minutes. Sprinkle flour, Worcestershire, Old Bay seasoning, salt and pepper over the vegetables and cook, stirring, for 1 minute more. Add fish (or seafood) stock and milk; bring to a gentle boil, stirring constantly.

Stir in potatoes and green beans; bring just to a simmer. Simmer, uncovered, stirring occasionally, until the potatoes are tender, 12 to 15 minutes.

Add cod and cook, stirring frequently, until cooked through, 2 to 4 minutes. Serve topped with dill and tomatoes, if desired.