Olive Oil Poached Cod with Rosemary, Garlic & Lemon
Prep time
Cook time
Total time
Flaky white fish is perfectly cooked when poached in delicate olive oil.
Recipe type: Seafood
Cuisine: Seafood
Serves: 2
  • 1 lb. fresh fish fillets, cut into 3” pieces (to easily fit your pan), room temperature
  • 3+ c. extra virgin olive oil (not necessarily a premium brand, but good quality)
  • 2-3 sprigs fresh rosemary
  • 2 garlic cloves, peeled and slightly crushed
  • 2-3 lemon slices (seeds removed)
  • Kosher salt
  • Freshly ground black pepper
  1. Heat oven to 275 degrees.
  2. In a medium saucepan, add the oil, rosemary, garlic and lemon slices over medium heat for about 5 minutes.
  3. Sprinkle each piece of fish with salt and pepper, then place in a casserole dish in one layer (they shouldn’t be too snug, to ensure even cooking). Cover with the warm oil. Add more oil if the tops are exposed.
  4. Allow the fish to sit for about 5 minutes before putting in the oven.
  5. Place in oven for about 25-30 minutes.
  6. When you notice some of the white albumen (protein) from the fish rising to the top of the oil, the fish is done; remove from oven.
  7. Remove the fish with a slotted spoon. Top with fresh lemon juice (and tapenade, gremolata, etc.) and serve.
1) The left over poaching oil can be used again for more poaching, or in salad dressing, with pasta, for croutons, etc. After removing the cooked fish from the baking dish, allow the oil to thoroughly cool, then remove lemons, garlic or herbs. Top a glass or other round container with a paper coffee filter. Pour the oil into the coffee filter, a little at a time. The oil will slowly drip from the filter and the cooking bits will be removed. Discard the filter when finished. Cover oil tightly and refrigerate until next use. The oil will keep for about 2 weeks.
2) This is also a great dish when planning ahead for a dinner party. Cook the fish as directed, allow it to cool, then place the whole dish in the refrigerator for up to a few days. When ready to serve, simply re-heat in a low oven.
Recipe by My Delicious Blog at https://www.mydeliciousblog.com/olive-oil-poached-cod-with-rosemary-garlic-lemon/