Equipment
* optional
Ingredients
Bechamel Filling
- 500 ml whole milk
- 50 g unsalted butter
- 15 ml olive oil
- 50 g white onion, finely minced
- 150 g jamon serrano, finely diced
- 60 g all-purpose flour
- ground nutmeg
- kosher salt
- black pepper
Breading
- 100 g all-purpose flour
- 2 eggs, lightly beaten
- 150 g fine breadcrumbs
Frying
- 500 ml light olive oil
Nutrition (per serving)
Nutrition is estimated per serving. Nutrients without complete source data are omitted.
Full nutrition
- Calories
- 103 kcal
- Protein
- 3 g
- Carbohydrates
- 12 g
- Fat
- 5 g
- Fiber
- 1 g
- Sugar
- 2 g
- Sodium
- 145 mg
- Saturated Fat
- 2 g
- Monounsaturated Fat
- 2 g
- Polyunsaturated Fat
- 1 g
- Cholesterol
- 24 mg
- Potassium
- 66 mg
- Calcium
- 40 mg
- Iron
- 0.5 mg
- Magnesium
- 8 mg
- Phosphorus
- 52 mg
- Zinc
- 0.3 mg
- Vitamin A
- 31 mcg
- Vitamin C
- 0 mg
- Vitamin D
- 0.4 mcg
- Vitamin E
- 0.3 mg
- Vitamin K
- 1 mcg
- Vitamin B6
- 0.0 mg
- Vitamin B12
- 0.2 mcg
- Thiamin
- 0.11 mg
- Riboflavin
- 0.09 mg
- Niacin
- 0.7 mg
- Folate
- 12 mcg
- Water
- 29 g
Sources: USDA FoodData Central
Method
Gently warm the milk in a small saucepan over medium-low heat or in the microwave until steaming but not boiling. Keep warm.
Melt the butter with the olive oil in a large heavy-bottomed saucepan over medium heat. Add the minced onion and saute for 4 to 5 minutes until completely softened and translucent.
Add the diced jamon to the saucepan and saute for 1 minute to release its fats and infuse the oil with flavor.
Sprinkle the flour over the onion and jamon mixture. Stir continuously for 3 to 4 minutes to create a roux and cook out the raw flour taste. Do not let the flour brown.
Gradually whisk in the warm milk, pouring in about 100ml at a time. Whisk vigorously after each addition to ensure a smooth, lump-free mixture. Cook the bechamel for 10 to 15 minutes, stirring constantly until it thickens dramatically and pulls away cleanly from the sides of the pan.
Remove from heat and stir in the nutmeg, black pepper, and salt to taste.
Pour the hot dough into a lightly oiled shallow dish. Press a sheet of plastic wrap directly onto the surface of the dough to prevent a skin from forming. Cool to room temperature, then refrigerate for at least 4 hours until very firm.
Using your hands or two spoons, scoop out roughly 30g portions of the chilled dough and shape them into small cylinders or logs. Place the shaped croquetas on a clean tray.
Set up a breading station with three shallow bowls: flour, lightly beaten eggs, and breadcrumbs. Roll each croqueta in the flour, shaking off excess, then dip completely in the egg, and finally coat evenly with breadcrumbs. Wash hands thoroughly after handling the raw eggs.
Heat the frying oil in a deep pan to exactly 180°C/350°F. Fry the croquetas in small batches of 4 or 5 for about 2 to 3 minutes, turning them carefully until they are deep golden brown. Ensure the interior reaches at least 74°C/165°F so the center is perfectly molten and safe to consume.
Use a slotted spoon to carefully remove the croquetas from the oil and transfer them to a plate lined with paper towels to drain excess fat. Serve immediately while hot.
Chef's Notes
- Infusing the milk with a leftover cured jamon bone for 20 minutes before making the bechamel adds an incredible depth of flavor and authenticity to the final dish.
- Patience is crucial when developing the roux. Cooking the flour and butter mixture for a full 3 to 4 minutes eliminates any chalky, raw flour taste while establishing a sturdy base.
- When shaping the croquetas, lightly coating your hands with olive oil or using two large spoons in a quenelle motion will prevent the delicate dough from sticking.
- For an extra shatterproof crust that thoroughly prevents bursting in the fryer, employ a double-breading technique: coat in flour, egg, and breadcrumbs, then dip back into the egg and breadcrumbs a second time.
Storage
Refrigerator: 3 days — Store fully chilled and unbreaded, or fully cooked. Raw breaded croquetas can become soggy.
Freezer: 3 months — Freeze breaded but uncooked croquetas in a single layer before transferring to an airtight container. Fry directly from frozen, adding 2 minutes to cook time.
Reheating: Reheat cooked croquetas in a 180°C/350°F oven for 10-15 minutes until hot and crispy. Avoid microwaving to preserve the crust.
Troubleshooting
Croquetas burst open while frying
Cause: The frying oil was too cold, or the bechamel dough was not thoroughly chilled, causing the interior to melt and expand before the crust could properly set.
Fix: Cannot be fixed once burst. For the remaining uncooked batch, let the oil come back up to temperature and place the unbreaded croquetas in the freezer for 15 minutes to firm up.
Prevention: Ensure the dough rests in the refrigerator for a strict minimum of 4 hours, and use a kitchen thermometer to keep the frying oil right at 180 degrees Celsius.
Lumpy bechamel filling
Cause: Adding cold milk to the hot roux, or dumping the milk in too quickly without vigorous whisking.
Fix: Before adding the jamon (or if you can pick it out), forcefully whisk the mixture off the heat or pass it through a fine mesh sieve.
Prevention: Warm the milk before adding, and pour it into the pan in small, gradual splashes while whisking constantly to maintain a smooth emulsion.
Cultural Context
Croquetas originated in France as a technique to use up leftover meats, but Spain adopted and elevated them by replacing the potato base with a rich, silky bechamel. In Spanish households, they are often lovingly made to utilize the final scraps carved from a leg of jamon serrano or iberico. Today, they stand as an iconic pillar of tapas culture, deeply cherished in bustling bars across the entire Iberian peninsula.
