Leche frita is a classic Spanish dessert of thick, creamy milk custard that is chilled, cut into squares, coated in egg and flour, then fried until golden and dusted with cinnamon sugar. Making it in a Thermomix simplifies the process: the machine stirs the custard constantly, preventing lumps and scorching, so you get a silky-smooth result every time. This recipe delivers the authentic texture and flavor with far less hands-on stirring than the traditional stovetop method.
Ingredients
- 4 cups (1 L) whole milk
- 1 cinnamon stick (or 1/2 tsp ground cinnamon)
- Zest of 1 lemon (about 1 tsp)
- 1 cup (200 g) granulated sugar
- 1 cup (125 g) all-purpose flour
- 2 large eggs (for the custard)
- 2 large eggs (for coating, beaten)
- 1/2 cup (60 g) all-purpose flour (for coating)
- Olive oil or sunflower oil, for frying
- For the cinnamon sugar: 1/4 cup (50 g) granulated sugar + 1 tsp ground cinnamon
Instructions
- Infuse the milk: Place the milk, cinnamon stick (or ground cinnamon), and lemon zest in the Thermomix bowl. Heat for 5 minutes at 90°C (194°F) on speed 1. Remove the cinnamon stick and lemon zest (if using a stick) and discard. Set the infused milk aside in the bowl.
- Make the custard: Add the sugar, 1 cup (125 g) flour, and 2 eggs to the infused milk. Mix for 10 seconds at speed 5. Then cook for 7 minutes at 90°C (194°F) on speed 3, without measuring cup, so steam can escape. The mixture will thicken to a pastry-cream consistency.
- Chill the custard: Pour the hot custard into a rectangular dish or baking pan (about 8×8 inches / 20×20 cm) lined with plastic wrap or lightly greased. Smooth the top. Let it cool to room temperature, then cover and refrigerate for at least 2 hours, or until completely firm and cold.
- Cut and coat: Once firm, turn the custard out onto a cutting board. Cut into squares or rectangles (about 2 inches / 5 cm each). Place the 1/2 cup (60 g) flour and the beaten eggs in separate shallow bowls. Dredge each piece in flour, then dip in beaten egg, making sure it’s fully coated.
- Fry: Heat about 1/2 inch (1 cm) of oil in a large skillet over medium heat (about 350°F / 175°C). Fry the coated pieces in batches, without crowding, for 2-3 minutes per side, until golden brown and crispy. Drain on paper towels.
- Finish: While still warm, roll the fried pieces in the cinnamon sugar mixture. Serve immediately.
Tips
- Chilling is crucial: Don’t rush the chilling time. The custard must be completely set (at least 2 hours, preferably overnight) or it will fall apart when you try to cut and coat it.
- Use a non-stick pan for frying: A non-stick skillet makes flipping the delicate fried pieces much easier. Also, make sure the oil is hot enough – if it’s too cool, the coating will absorb oil and become greasy.
- Substitutions: You can use a gluten-free all-purpose flour blend in both the custard and the coating – the texture will be slightly less tender but still delicious. For a dairy-free version, use full-fat oat or soy milk; the custard will be a bit softer, so chill it longer.
- Common mistake: Overcooking the custard in the Thermomix can make it too thick and rubbery. Stick to the time and temperature specified; it should be the consistency of thick pastry cream.
Serving Suggestions
Leche frita is traditionally served as a dessert or an afternoon snack (merienda) in Spain. It’s delightful on its own, but you can elevate it with a scoop of vanilla ice cream, a drizzle of honey, or a spoonful of berry compote. A dusting of extra cinnamon on top is always welcome.
Variations
- Chocolate leche frita: Replace 2 tablespoons (15 g) of the flour with unsweetened cocoa powder in the custard step.
- Orange-scented: Swap the lemon zest for orange zest and add 1 tablespoon of orange liqueur (like Grand Marnier) to the custard.
- Baked version: For a lighter take, brush the coated pieces with oil and bake at 400°F (200°C) for 15-20 minutes, flipping halfway, until golden.
- Anise flavor: Add 1 teaspoon of anise liqueur (like anís) to the custard along with the eggs.
Storage and Reheating
Leche frita is best eaten fresh, but you can store leftovers in an airtight container in the refrigerator for up to 3 days. To reheat, place them on a baking sheet and warm in a 350°F (175°C) oven for 5-7 minutes until crisp. Avoid microwaving, as it will make the coating soggy. You can also freeze the un-fried, coated pieces for up to 1 month – fry them directly from frozen, adding a couple of minutes to the cooking time.
Frequently Asked Questions
Can I use cornstarch instead of flour? Yes, you can substitute the all-purpose flour in the custard with an equal amount of cornstarch (by weight). The texture will be slightly more gelatinous and delicate. For the coating, use all-purpose flour as usual.
Why did my custard curdle? Curdling usually happens if the milk was too hot when you added the eggs, or if the mixture was cooked at too high a temperature. The Thermomix should keep it smooth, but make sure you heat the milk to only 90°C (194°F) and not boiling. If you see lumps, blend the custard for 10 seconds at speed 8 before pouring it into the dish.
Can I make leche frita ahead of time? Yes, you can prepare the custard and chill it up to 2 days in advance. Cut and coat the pieces just before frying. Fried leche frita is best served within a few hours.
What oil is best for frying? A neutral oil with a high smoke point, like sunflower, canola, or light olive oil, works best. Extra-virgin olive oil can be used for a more traditional Spanish flavor, but it has a lower smoke point and may burn.
Can I skip the egg coating? The egg wash is essential for creating the crispy outer layer that contrasts with the creamy interior. Without it, the flour coating will be pasty and not crisp. If you have an egg allergy, you can try dipping in milk or a plant-based milk mixed with a little cornstarch, but the result will be different.
Is leche frita served hot or cold? It’s typically served warm, right after frying, so the outside is crispy and the inside is soft. Some people enjoy it at room temperature, but it’s not traditionally served cold from the fridge.
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