Step 1
To a big skillet set over medium-high warmth, add the oil, celery, garlic, onion, and chile flakes, if utilizing. Prepare dinner, stirring sometimes, till the greens are delicate, about 10 minutes. Stir within the cuttle-fish, squid, tomatoes, and 2½ cups of water. Season evenly with salt, convey to a boil, then flip the warmth all the way down to simmer till the cuttlefish and squid are tender, 20–40 minutes (massive cuttlefish could take longer to prepare dinner). Add the fish, clams, mussels, shrimp, and prawns and prepare dinner till the bivalves open, 3–5 minutes.
Step 2
Drizzle the stew with olive oil, season to style with salt, garnish with parsley, and serve sizzling with bread on the facet.
