Summary: Grilled cod seems like the easiest recipe in the world: a piece of cod, a hot grill, and done. But the reality is that it's one of the preparations where the most mistakes are made.
Grilled cod: simple but with technique
Grilled cod seems like the easiest recipe in the world: a piece of cod, a hot grill, and done. But the reality is that it's one of the preparations where the most mistakes are made. Dry cod, skin that sticks, burnt outside with raw inside, pieces that break when flipped... Sound familiar? In this guide, we'll teach you the correct technique to achieve grilled cod with crispy skin, a juicy interior, and that perfect golden brown.
At Bacalalo, in the Mercat del Ninot, we grill cod daily. With over 30 years of experience, we've learned that details make all the difference: the grill temperature, drying the cod, cooking time, and when (and how) to flip it.
Which cut to choose for grilling
Grilling is a direct high-temperature cooking method, so you need a cut that can withstand it:
- Loin (2-3 cm): the best option. Thick enough for the center to remain juicy while the surface browns. With skin for crispiness.
- Supreme: loin cut without skin or bones. It works well, 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 reserved 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).
Pre-preparation of the cod
Preparation before placing the cod on the grill is more important than the cooking itself:
1. Proper desalting
Improperly desalted cod ruins any preparation. Consult the thickness-based timing chart. For grilling, it's especially important because there's no sauce to mask excess salt.
2. Bring to room temperature 15 minutes before
Cold cod from the fridge causes the grill temperature to drop on contact, preventing proper searing. Take it out 15 minutes beforehand.
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. Wet 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 trick: 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 oil the cod, the oil heats gradually and creates a perfect non-stick barrier.
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Step-by-step grilling
1. Heat the grill to high heat
Heat the grill (or cast-iron skillet) to high heat for 3-4 minutes. It should be very hot. If you hold your hand about 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 loins skin-side down. Do not move them for the first 2-3 minutes. The skin needs time to sear and naturally release from the grill. If you try to move it too soon, it will stick and break.
3. Reduce to medium heat
After the first 30 seconds on high heat (to sear), reduce to medium heat. The cod needs sustained but not aggressive heat. Cook skin-side down for 3-4 minutes until the skin is crispy and golden.
4. Flip (only once)
Using a wide, firm spatula, flip it in one decisive motion. Don't hesitate: indecision breaks the pieces. Cook flesh-side down 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 for 2/3 of its thickness and the center still has a slightly translucent point. When removed from the grill, residual heat will finish cooking it. If you wait until it's completely opaque on the grill, it will be dry.
Cooking times based on 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 tricks for perfect grilled cod
- Dry it until the paper absorbs no more: repeat drying 2-3 times if necessary. Surface dryness is the most determining factor.
- Oil the fish, not the grill: oil on a hot grill burns. On the fish, it creates a protective barrier.
- Skin first, longer time: the skin needs 50-60% of the total cooking time. It's the part we want crispy.
- Don't move the cod: leave it still until it releases on its own. 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 the more juice it loses. A single, clean, decisive flip.
- Grill or cast iron pan: non-stick pans do not generate enough heat for good searing. Cast iron or steel are ideal.
- Rest for 1-2 minutes: after removing the cod from the grill, let it rest on a warm plate for 1-2 minutes. The juices redistribute and the texture improves.
Mistakes to avoid
- Cold grill: if the grill is not hot enough, the cod sticks and steams 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 in the fridge for 10 minutes on kitchen paper.
- Constantly moving it: the temptation to move the cod is great, but each movement breaks the crust and releases juices.
- Overcooking: grilled cod overcooks 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.
- Lemon: half a lemon on the side is the simplest and most effective accompaniment.
- Piquillo peppers: roasted, next to 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 that seeks 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 but with technique: Grilled cod seems like the easiest recipe in the world: a piece of cod, a hot grill, and done.
- Step-by-step grilling: Heat the grill (or cast-iron skillet) to 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 oiling 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 sticks and steams in its juices instead of browning.
How long does cod take to grill?
For a 2-3 cm loin: 3-4 minutes skin-side down + 2-3 minutes flesh-side down. Adjust according to thickness. The center should be slightly translucent when removed. At Bacalalo, in the Mercat del Ninot, we grill cod daily.
Can frozen cod be grilled?
Not directly. Defrost it in the fridge for 12-24 hours, dry it thoroughly, and then follow the normal technique. In this guide, we'll teach you the correct technique to achieve grilled cod with crispy skin, a juicy interior, and that perfect golden brown.
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 loins skin-side down.
Is a grill or a pan better?
A cast-iron grill or a thick steel pan gives the best result. Non-stick pans do not reach the necessary temperature for good searing. Heat the grill to high heat. Heat the grill (or cast-iron skillet) to high heat for 3-4 minutes.
Buy cod loins perfect for grilling at Bacalalo.
→ Prepare it with Bacalalo products: Extra desalted cod loin
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