How to make: Cod Grenobloise
How to make: Cod Grenobloise is a medium French recipe that serves 4. 350 calories per serving. Recipe by Adam Byatt on YouTube.
Prep: 44 min | Cook: 24 min | Total: 1 hr 23 min
Cost: $28.35 total, $7.09 per serving
Ingredients
- 1.5 kg Cod Fillet (skinless, trimmed, from whole 3.5 kg cod)
- 2 Tbsp Coarse Sea Salt (part of 60/40 dry brine)
- 1 Tbsp Granulated Sugar (part of 60/40 dry brine)
- 2 Tbsp Olive Oil (for pan‑frying, extra‑virgin recommended)
- 4 Tbsp Unsalted Butter, Salted French Butter (for croutons and sauce, high‑quality salted butter)
- 2 Lemon (peeled and segmented for garnish)
- 2 Tbsp Capers (rinsed, drained)
- 2 Tbsp Cornichons (finely diced)
- 1/4 cup Dry White Wine (adds acidity to sauce)
- 2 Tbsp Fresh Parsley (chopped, for garnish)
- 4 slices Bread (Country loaf) (cut into 1‑cm cubes for croutons; two loaves used in video)
- 1/4 cup Fish Stock (for braising the cod)
- 1 small head Cauliflower (for puree base, optional)
- 2 Tbsp Heavy Cream (for cauliflower puree, optional)
- to taste Black Pepper (freshly ground for garnish seasoning)
Instructions
Fillet the Whole Cod
Using a sharp filleting knife, cut along the backbone to remove the two fillets, keeping cuts long and close to the bone. Use robust kitchen scissors to cut through the belly ribs and remove any remaining bones. Trim away the belly and dorsal fin, saving trimmings for stock if desired.
Time: PT15M
Dry Brine the Fillets
Mix 2 Tbsp coarse sea salt with 1 Tbsp granulated sugar (60/40 ratio). Sprinkle the mixture evenly over both sides of the fillets placed skin‑side down in a shallow tray. Let rest for 12 minutes without rinsing.
Time: PT14M
Rinse and Pat Dry
Rinse the brined fillets under cold water to remove excess salt and sugar. Pat thoroughly with paper towels.
Time: PT3M
Prepare Garnish Ingredients
Dice cornichons, chop parsley, and segment the lemons by peeling around the skin with a thin flexible knife and cutting between the membranes to create clean wedges. Cube the bread into 1‑cm pieces for croutons.
Time: PT15M
Make Croutons
Melt 2 Tbsp butter in the skillet over medium‑high heat. Add bread cubes, tossing to coat, and toast until golden and crisp, about 4 minutes. Transfer to a plate and set aside.
Time: PT5M
Temperature: Medium
Pan‑Sear the Cod
Add 2 Tbsp olive oil to the same skillet and heat until shimmering. Place the fillet flesh‑side down, press gently with a weight or press, and cook 4 minutes until the bottom is lightly golden and the fish releases easily. Flip gently with a fish slice.
Time: PT4M
Temperature: Medium
Braise in Oven
Add 1 Tbsp butter and 1/4 cup fish stock to the pan, then transfer the skillet to a pre‑heated 180°C oven. Braise for 5 minutes until the fish is opaque and just cooked through.
Time: PT5M
Temperature: 180°C
Brown Butter for Sauce
Remove the cod and set aside. Return the pan to the stove, increase heat to medium‑high, and let the butter melt and turn nut‑brown, watching for a foamy stage then a caramel color (about 2 minutes).
Time: PT2M
Temperature: Medium‑high
Finish Sauce and Garnish
Add the juice of the lemon segments, 1/4 cup white wine, and stir to deglaze. Quickly fold in diced cornichons, capers, whole lemon segments, chopped parsley, and the toasted croutons. Season with a pinch of black pepper and adjust salt if needed.
Time: PT5M
Temperature: Medium
Plate the Dish
If using, spread a thin layer of cauliflower puree on each plate. Place the braised cod on top, then spoon the lemon‑caper‑crouton sauce around the fish. Garnish with extra parsley if desired.
Time: PT5M
Nutrition Facts
- Calories
- 350
- Protein
- 35 g
- Carbohydrates
- 15 g
- Fat
- 15 g
- Fiber
- 2 g
Dietary info: Pescatarian, Contains gluten, Contains dairy
Allergens: Fish, Dairy, Gluten
Ingredient Substitutions
- Instead of Cod Fillet: Halibut fillet, Haddock fillet
- Instead of Coarse Sea Salt: Kosher salt
- Instead of Granulated Sugar: Brown sugar
- Instead of Olive Oil: Canola oil, vegetable oil
- Instead of Unsalted Butter, Salted French Butter: European style butter
- Instead of Lemon: Lime
- Instead of Capers: green olives, chopped
- Instead of Cornichons: gherkin pickles
- Instead of Dry White Wine: dry vermouth, apple juice with a splash of vinegar
- Instead of Fresh Parsley: chervil, cilantro
- Instead of Bread (Country loaf): sourdough bread, ciabatta
- Instead of Fish Stock: vegetable stock, water with a pinch of salt
- Instead of Cauliflower: parsnip, celeriac
- Instead of Heavy Cream: half‑and‑half
- Instead of Black Pepper: white pepper
Equipment Needed
- Sharp Filleting Knife
- Robust Kitchen Scissors
- Fish Slice or Spatula
- Large Skillet (heavy‑bottomed)
- Oven
- Cutting Board
- Measuring Spoons
- Mixing Bowls
- Basting Brush (optional)
- Tongs
- Microplane or Zester (optional)
- Saucepan (for puree) (optional)
Critical Steps — Do Not Skip
- Filleting the whole cod cleanly to avoid small bone fragments
- Dry‑brining with the precise 60/40 salt‑sugar ratio
- Achieving a golden crust on the flesh side without skin
- Browning the butter to the nut stage without burning
- Keeping croutons crisp when added to the warm sauce
Chef Tips from the Video
- Use a flexible filleting knife to follow the natural curve of the cod’s backbone for cleaner cuts.
- Press the fillet with a small weight (a clean pan or a foil‑wrapped brick) to ensure even contact with the pan.
- For extra brightness, finish the sauce with a drizzle of high‑quality extra‑virgin olive oil just before plating.
Troubleshooting
Fish sticks to the pan during the first sear
Make sure the pan and oil are hot before adding the fillet; give the fish a few minutes to develop a crust before attempting to flip.
Butter burns and turns bitter
Watch the butter closely; once it foams and turns a light amber, remove from heat immediately and add the wine and lemon juice.
Croutons become soggy in the sauce
Add croutons at the very end, just before serving, and toss quickly so they retain crunch.
Storage
Refrigerator: Store any leftover cod in an airtight container for up to 2 days. Garnish components (croutons, lemon segments) keep separately for up to 3 days.
Freezer: Cod can be frozen raw (unbrined) for up to 2 months; cooked cod freezes well for 1 month.
Room temperature: Sauce should not sit at room temperature for more than 1 hour due to butter.
Make-Ahead Tips
- Dry‑brine the cod up to 2 hours ahead and keep refrigerated; rinse and pat dry before cooking.
- Croutons can be made a day ahead and stored in an airtight container.
- The cauliflower puree can be prepared earlier and reheated gently before plating.
Frequently Asked Questions
What is the cultural significance and history of Cod Grenobloirs in French cuisine?
Cod Grenobloirs originates from the Grenobyl region of France, where fresh fish was historically scarce. The dish was created as a way to make slightly older cod shine by dry‑brining it and pairing it with bright lemon, capers, and crunchy croutons, turning a humble protein into a celebrated restaurant staple.
What are the traditional regional variations of Cod Grenobloirs in French cuisine?
In coastal Brittany, cooks often add a splash of cider to the butter sauce, while in Provence they might incorporate herbs de Provence and a touch of garlic. Some versions replace the croutons with toasted pine nuts for a Mediterranean twist.
How is Cod Grenobloirs traditionally served in France?
The classic presentation is a single large fillet placed atop a smooth cauliflower puree, surrounded by a lemon‑caper‑crouton sauce. It is usually served as a shared plate for two, accompanied by a crisp white wine such as Muscadet.
On what occasions is Cod Grenobloirs traditionally enjoyed in French culture?
Cod Grenobloirs is popular for special dinner parties, holiday meals like Christmas Eve, and upscale bistro lunches. Its elegant appearance and balanced flavors make it a favorite for celebratory gatherings.
What makes Cod Grenobloirs special or unique in French cuisine?
The dish combines three classic French techniques—dry brining, butter‑browning, and a bright citrus‑caper garnish—creating a harmonious balance of richness, acidity, and texture that showcases the cod’s delicate flavor while adding visual drama with lemon segments and croutons.
What are the most common mistakes to avoid when making Cod Grenobloirs at home?
Common errors include over‑salting the brine, not allowing the butter to reach the nut‑brown stage before adding wine, and adding croutons too early so they become soggy. Also, flipping the fish before a crust forms can cause it to break apart.
Why does this Cod Grenobloirs recipe use a 60/40 salt‑to‑sugar dry brine instead of a simple salt brine?
The 60/40 ratio draws out moisture while the sugar helps to gently caramelize the surface during searing, giving the cod a firmer texture and a subtle sweetness that balances the acidic lemon‑caper sauce.
Can I make Cod Grenobloirs ahead of time and how should I store it?
Yes. You can dry‑brine the cod up to 2 hours ahead, keep it refrigerated, and re‑sear just before serving. The croutons and sauce can be prepared earlier; store the sauce separate and combine with croutons right before plating to retain crunch.
What texture and appearance should I look for when pan‑searing the cod for Cod Grenobloirs?
The flesh side should develop a light golden crust with a slight crispness, while the interior remains opaque and moist. The fish should release easily from the pan when a proper crust has formed.
What does the YouTube channel Adam Byatt specialize in?
The YouTube channel Adam Byatt specializes in modern European home cooking, focusing on technique‑driven recipes, fish preparation, and elegant plating that bridges restaurant quality with everyday kitchen practicality.
How does the YouTube channel Adam Byatt's approach to French fish dishes differ from other cooking channels?
Adam Byatt emphasizes mastering fundamental skills like filleting whole fish, dry‑brining, and butter‑browning, while many other channels rely on pre‑filleted fish and shortcut methods. His videos also highlight the cultural backstory of each dish, giving viewers a deeper appreciation of French culinary heritage.
Last updated: September 2, 2026
