Chef John's Cioppino

1 . Stage

Combine butter and olive oil in a large Dutch oven over medium-low heat.

2 . Stage

Stir in onion and celery with a pinch of salt; cook until onion is soft and golden, 6 to 7 minutes. Stir in garlic and cook for 1 minute.

3 . Stage

Stir wine into onion mixture; increase heat to high and bring to a simmer.

4 . Stage

Stir in tomato puree, water, bay leaf, oregano, red pepper flakes, and Worcestershire sauce. Reduce heat to low and simmer, 35 minutes.

5 . Stage

Increase heat to high and bring the mixture to a boil. Stir in lemon and cod, return to simmer, about 2 minutes.

6 . Stage

Stir in crab, shrimp, and mussels. Cover and simmer until all mussels are cooked and open, about 5 minutes.

7 . Stage

Stir in fresh parsley and basil; season with salt and pepper to taste. Chef John