Instructions:
- Melt butter in a large Dutch oven or stockpot over medium heat. Add diced onion and celery. Sauté gently for 8–10 minutes until softened and translucent.
- Sprinkle the flour over the softened vegetables and stir constantly for 1 minute.
- Pour in the white wine, scraping up any browned bits from the bottom of the pot. Let it bubble and reduce by half (about 2 minutes).
- Pour in the clam juice, add the diced tomatoes (with their liquid), dried thyme, and the bay leaf. Bring the mixture to a gentle simmer.
- Add the diced potatoes. Continue to simmer gently, partially covered, for about 15–20 minutes, or until the potatoes are tender when pierced with a fork.
- Stir in the drained clams. If using canned clams, allow them to cook for 5 minutes. If using fresh clams, cook just until they open and firm up slightly (about 5–7 minutes). Do not overcook the clams.
- Remove the bay leaf. Taste the chowder and adjust seasoning with salt and black pepper as needed, being mindful of the saltiness of the clam juice.
- Ladle the Rhode Island Clam Chowder into bowls immediately and garnish generously with fresh parsley.