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Relampagos de Cajeta

Relampagos de Cajeta

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Guanajuato's relampagos take a French bakery shell and make it answer to Celaya cajeta: goat's-milk caramel, dark chocolate glaze, and choux baked until crisp.

Pastries & Cookies
Mexican
Special Occasion
Comfort Food
Make Ahead
45 min
Active Time
55 min cook1 hr 40 min total
Yield12 relampagos

Guanajuato, the Bajio, is where this version earns its name. Relampagos came through the French bakery fashion that settled into Mexican panaderias, but the cajeta belongs to Celaya. Goat's milk, copper pot, patient stirring. That is the flavor that makes these relampagos Mexican, not just pastry with a Spanish name.

The shell is pasta choux, and it asks for discipline. Butter, water, flour, eggs. You cook the flour in the pot until it pulls from the sides, then beat in the eggs one by one until the dough shines and falls from the spoon in a thick ribbon. No me vengas con atajos. If the dough is too wet, the shells collapse. If the oven is too timid, they never puff.

I first wrote this formula after visiting a cajeta maker outside Celaya, where the copper cazos were dark from years of milk and sugar bubbling down into that burnt, deep sweetness. The women stirring those pots know patience in their wrists. Fill the relampagos generously, glaze them dark, and set them on a painted majolica platter from Dolores Hidalgo. Cada estado, su propia cocina.

Relampagos are Mexico's adaptation of the French eclair, a choux pastry that entered urban Mexican bakeries during the 19th century and became especially fashionable during the Porfiriato, when French-style panaderias multiplied in Mexico City and Puebla. Cajeta is strongly identified with Celaya, Guanajuato, where goat's milk caramel became a regional industry by the 19th century because goats thrived in the Bajio's dry grazing country. During Mexico's War of Independence, cajeta traveled well in small wooden boxes, which helped make Celaya's version nationally known.

The technique, the tradition, and the story behind every dish.

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Ingredients

water

Quantity

1 cup

unsalted butter

Quantity

8 tablespoons

cut into pieces

granulated sugar

Quantity

1 tablespoon

fine sea salt

Quantity

1/2 teaspoon

all-purpose flour

Quantity

1 cup

large eggs

Quantity

4

at room temperature

large egg

Quantity

1

beaten with 1 teaspoon water, for egg wash

cajeta de Celaya

Quantity

1 1/2 cups

preferably goat's-milk cajeta

heavy cream

Quantity

1/2 cup

Mexican dark chocolate or bittersweet chocolate

Quantity

6 ounces

finely chopped

unsalted butter, for the glaze

Quantity

1 tablespoon

fine sea salt, for the glaze

Quantity

1/4 teaspoon

Equipment Needed

  • Medium heavy saucepan
  • Wooden spoon
  • Piping bag with large plain tip
  • Two parchment-lined baking sheets
  • Wire cooling rack
  • Small saucepan for the chocolate glaze

Instructions

  1. 1

    Prepare the oven

    Heat the oven to 425F. Line two baking sheets with parchment. Draw twelve 4-inch guide lines on the underside of the parchment if you want straight relampagos. A panaderia works by repetition and control, not guessing.

  2. 2

    Cook the dough

    Combine the water, butter, sugar, and salt in a medium saucepan. Bring to a full boil over medium heat. Add the flour all at once and stir hard with a wooden spoon until the dough gathers into one mass and leaves a thin film on the bottom of the pot, about 2 minutes. That cooking matters. Raw flour makes heavy shells.

  3. 3

    Beat in eggs

    Transfer the hot dough to a mixing bowl and let it cool for 5 minutes. Beat in the eggs one at a time, mixing fully after each addition. The dough will look broken before it comes back together. Keep going. It should finish glossy, thick, and able to fall from the spoon in a slow V shape.

    Room-temperature eggs blend more evenly. Cold eggs tighten the dough and make you fight it.
  4. 4

    Pipe the shells

    Spoon the dough into a piping bag fitted with a large plain tip. Pipe twelve thick 4-inch logs, leaving space between them. Brush lightly with egg wash and smooth any pointed ends with a damp fingertip. Do not flatten them. The oven needs height to lift.

  5. 5

    Bake until hollow

    Bake for 15 minutes at 425F, then reduce the oven to 350F without opening the door. Bake 22 to 28 minutes more, until the shells are deep golden, firm, and light when lifted. Turn off the oven, crack the door, and let them sit inside for 10 minutes. This dries the centers so they do not collapse.

  6. 6

    Open and cool

    Move the shells to a rack. When cool enough to handle, make two small holes in the bottom of each shell with a paring knife or skewer. Let them cool completely before filling. Warm pastry melts cajeta into a mess. Patience is cheaper than starting over.

  7. 7

    Fill with cajeta

    Stir the cajeta until smooth. If it is too stiff to pipe, warm it gently in a bowl set over hot water for a minute or two. Pipe cajeta into each shell from the bottom holes until the pastry feels full in your hand. Do not be stingy. The filling is the point.

  8. 8

    Make the glaze

    Heat the cream just until small bubbles form at the edge of the pan. Pour it over the chopped chocolate, butter, and salt. Let it sit for 2 minutes, then stir until smooth and dark. The glaze should coat the spoon and fall slowly. If it runs like water, wait. Chocolate needs a moment to thicken.

  9. 9

    Glaze and set

    Dip the top of each filled relampago into the chocolate glaze, letting the excess drip back into the bowl. Set on a rack until the chocolate loses its wet shine and settles into a smooth coat. Serve the same day for the crispest shell, or chill if you want the cajeta firmer. Recetas probadas y garantizadas.

Chef Tips

  • Use real cajeta made from goat's milk if you can find it. Dulce de leche is cow's milk and tastes softer. It will work in the pastry, but it is not the same thing. A substitution is a compromise, not an upgrade.
  • If your cajeta is very loose, simmer it in a small saucepan for 3 to 5 minutes, stirring constantly, until it thickens enough to pipe. Do not walk away. Milk sugar burns fast.
  • Do not open the oven during the first 25 minutes. Choux pastry rises from trapped moisture inside the dough. Open the door too early and the shells fall. Asi se hace y punto.
  • A darker chocolate is better here because cajeta is already sweet. Milk chocolate makes the relampago taste flat and sugary.

Advance Preparation

  • The choux shells can be baked one day ahead. Store them uncovered or loosely covered at room temperature so they stay dry, then crisp them for 5 minutes in a 325F oven before filling.
  • The cajeta can be stirred smooth and loaded into a piping bag several hours ahead. Keep it at room temperature if your kitchen is cool, or refrigerate and warm gently before piping.
  • Filled relampagos keep refrigerated for 24 hours, but the shell softens. For the best texture, fill and glaze them within 2 hours of serving.

Frequently Asked Questions

Nutrition Information

1 serving (about 110g)

Calories
390 calories
Total Fat
22 g
Saturated Fat
13 g
Trans Fat
0 g
Unsaturated Fat
9 g
Cholesterol
120 mg
Sodium
250 mg
Total Carbohydrates
42 g
Dietary Fiber
1 g
Sugars
29 g
Protein
7 g

Note: Chef personas and recipes are created with AI assistance. Cook with care: follow safe food-handling practices, check doneness with a thermometer when needed, and adapt for allergies and your kitchen.

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