Summary: Grilled cod seems like the easiest recipe in the world: a piece of cod, a hot grill, and you're done. But the reality is that it's one of the preparations where most mistakes are made.
If your grilled cod turns out dry, it's not the cod's fault. It's the order: improperly calibrated temperature, fillet moved too soon, and cold oil. Three adjustments and it's resolved.
Specifically: the exact grill temperature (high, not medium), cooking time per fillet thickness (4 minutes per side for 2.5 cm, 6 for 3.5 cm), which side goes first (skin, always skin), and why moving the fillet during the first minute guarantees it will stick. Also: what to do if the cod releases water too soon and how to get a golden crust without drying out the interior.
Before the step-by-step, two things to check on the fillet when you have it in hand.
Grilled cod: simple yet technical
Grilled cod seems like the easiest recipe in the world: a piece of cod, a hot grill, and you're done. But the reality is that it's one of the preparations where most mistakes are made. Dry cod, sticking skin, burnt exterior with raw interior, pieces breaking when flipped... Sound familiar? In this guide, we teach you the correct technique to achieve grilled cod with crispy skin, a juicy interior, and that perfect golden finish.
At Bacalalo, in the Mercat del Ninot, we make grilled cod daily. With over 30 years of experience, we've learned that the details make all the difference: grill temperature, drying the cod, cooking time, and when (and how) to flip it.
Which cut to choose for grilling
Grilling is direct high-temperature cooking, so you need a cut that can withstand it:
- Fillet (2-3 cm): the best option. Thick enough so the center remains juicy while the surface browns. With skin for crispiness.
- Supreme: skinless, boneless fillet. It's good, but without the skin, it loses the crispy part that makes grilled cod special.
- Penca: works, but the bone makes uniform contact with the grill difficult. Better to reserve it for baking.
- Avoid thin pieces (less than 1.5 cm): they dry out in seconds on the grill. If you only have thin pieces, cook them very quickly (30 seconds per side).
Cod preparation
Preparation before grilling the cod is more important than the cooking itself:
1. Correct desalting
Poorly desalted cod ruins any preparation. Consult the desalting time chart by thickness. For grilling, it's especially important because there's no sauce to mask excess salt.
2. Bring to room temperature 15 minutes before cooking
Cold cod from the fridge causes the grill to drop in temperature on contact, preventing proper searing. Take it out 15 minutes before cooking.
3. Dry thoroughly
This is THE most important step. Dry the cod with kitchen paper on all sides, especially the skin. Press gently to absorb all moisture. Moist cod doesn't brown; it steams. And cod that steams on the grill sticks, breaks, and becomes rubbery.
4. Oil the cod, not the grill
A crucial tip: brush the cod with a thin layer of olive oil, not the grill. If you put oil on a hot grill, it burns and smokes. If you brush the cod, the oil heats gradually and creates a perfect non-stick barrier.
Related products from Bacalalo
Step-by-step grilling
1. Heat the grill to high heat
Heat the grill (or cast iron skillet) over high heat for 3-4 minutes. It should be very hot. If you hold your hand 10 cm above it and feel intense heat, it's ready. The cod should sizzle on contact.
2. Place the cod skin-side down
Place the fillets skin-side down. Do not move them for the first 2-3 minutes. The skin needs time to sear and naturally detach from the grill. If you try to move it too soon, it will stick and break apart.
3. Lower to medium heat
After the first 30 seconds on high heat (to sear), lower to medium heat. The cod needs sustained but not aggressive heat. Cook on the skin side for 3-4 minutes until the skin is crispy and golden.
4. Flip (only once)
Using a wide, firm spatula, flip it in a decisive motion. Don't hesitate: hesitation breaks the pieces. Cook on the flesh side for 2-3 more minutes. The total time depends on the thickness (see table below).
5. Doneness
Grilled cod is ready when the flesh is opaque up to 2/3 of its thickness and the center still has a slightly translucent point. When removed from the grill, residual heat will finish the cooking. If you wait for it to be completely opaque on the grill, it will be dry.
Times according to thickness
- 1-1.5 cm: 1.5 min skin side + 1 min flesh side (high heat)
- 2-2.5 cm: 3 min skin side + 2 min flesh side (medium-high heat)
- 3-3.5 cm: 4 min skin side + 3 min flesh side (medium heat)
- 4+ cm: 5 min skin side + 3-4 min flesh side (medium heat, cover for 1 min at the end)
7 tips for perfect grilled cod
- Dry it until the paper absorbs no more: repeat drying 2-3 times if necessary. Surface dryness is the most critical factor.
- Oil on the fish, not on the grill: oil on a hot grill burns. On the fish, it creates a protective barrier.
- Skin first, longer: the skin needs 50-60% of the total cooking time. It's the part we want crispy.
- Don't move the cod: leave it alone until it releases itself. If it resists, it's not ready. If it moves easily, it's time.
- Only one flip: the more you handle it, the more it breaks and loses juices. One clean, decisive flip.
- Grill or cast iron pan: non-stick pans do not generate enough heat for a good sear. Cast iron or steel are ideal.
- Rest for 1-2 minutes: after taking the cod off the grill, let it rest on a warm plate for 1-2 minutes. Juices redistribute and texture improves.
Mistakes to avoid
- Cold grill: if the grill is not hot enough, the cod will stick and boil in its juices instead of browning.
- Wet cod: moisture prevents searing. If the cod has just come out of the desalting water, dry it and leave it for 10 minutes in the fridge on paper towels.
- Constantly moving it: the temptation to move the cod is great, but each movement breaks the crust and releases juices.
- Overcooking: grilled cod can overcook in 30 seconds. It's better to remove it a little early and let residual heat complete the cooking.
- Too thin cuts: they dry out instantly. If you only have thin pieces, cook them for 30 seconds per side and serve immediately.
Ideal accompaniments
- Grilled vegetables: green asparagus, Padrón peppers, zucchini, eggplant. Cook them on the same grill before the cod.
- Aioli: homemade, with raw garlic crushed in a mortar and olive oil.
- Fresh salad: lamb's lettuce, arugula, or mixed greens with a lemon vinaigrette.
- Potatoes: steamed with a drizzle of oil, or fried as a classic side dish.
- Lemon: half a lemon on the side is the simplest and most effective accompaniment.
- Piquillo peppers: roasted, alongside the cod, with a little olive oil.
Nutritional information
Grilled cod is one of the lightest and healthiest preparations:
- Calories: 130-160 kcal per serving (cod with oil only)
- Protein: 22-25 g — high-quality complete protein
- Fats: 4-6 g (from olive oil used for brushing)
- Carbohydrates: 0 g
It is the ideal option for weight control diets, protein diets, or any eating plan seeking clean protein with minimal fat. Cod is a lean white fish with only 0.7 g of fat per 100 g raw.
Conclusions
- Grilled cod: simple yet technical: Grilled cod seems like the easiest recipe in the world: a piece of cod, a hot grill, and you're done.
- Step-by-step grilling: Heat the grill (or cast iron skillet) over high heat for 3-4 minutes.
Frequently asked questions
How to prevent cod from sticking to the grill?
Three keys: very hot grill, completely dry cod, and oil the cod (not the grill). If it sticks, it means it's not dry enough or the grill wasn't hot enough. Mistakes to avoid Cold grill: if the grill is not hot enough, the cod will stick and boil in its juices instead of browning.
How long does cod take to grill?
For a 2-3 cm fillet: 3-4 minutes on the skin side + 2-3 minutes on the flesh side. Adjust according to thickness. The center should be slightly translucent when removed. At Bacalalo, in the Mercat del Ninot, we make grilled cod daily.
Can I grill frozen cod?
Not directly. Thaw it in the fridge for 12-24 hours, dry it thoroughly, and then follow the normal technique. In this guide, we teach you the correct technique to achieve grilled cod with crispy skin, a juicy interior, and that perfect golden finish.
Skin side up or down first?
Always skin side down first. The skin needs more time to become crispy and acts as a protector for the flesh during most of the cooking. Place the cod skin-side down Place the fillets skin-side down.
Is a grill or a pan better?
A cast iron grill or a thick steel pan yields the best results. Non-stick pans do not reach the necessary temperature for a good sear. Heat the grill to high heat Heat the grill (or cast iron skillet) over high heat for 3-4 minutes.
Buy cod loins perfect for grilling at Bacalalo.
→ Prepare it with Bacalalo products: Extra desalted cod jowl
Products that may interest you
