Macarrón de Leche de San Marcos

Ingredients

Equipment Needed

• •Clean copper cazo reserved for sweets, or a wide heavy stainless pot
• •Long wooden cuchara or paddle
• •Candy thermometer and a small bowl of cold water for testing punto
• •8-inch square pan or shallow wooden frame lined with parchment

Instructions

1. 1

   Prepare the mold

   Lightly butter an 8-inch square pan or a shallow wooden frame and line the bottom with parchment. Leave a little overhang so you can lift the candy out cleanly. Set a small bowl of cold water beside the stove for testing the punto. Once the milk reaches the right stage, you will not have time to go looking for anything.

2. 2

   Start the milk

   Pour the leche entera into a clean copper cazo reserved for sweets, or into a wide heavy stainless pot. Add the sugar, canela, bicarbonato de sodio, and salt. Stir over medium heat with a long wooden spoon until the sugar dissolves. The bicarbonato will make the milk foam at first. That is normal. It helps the milk cook without curdling while it reduces.

   If your copper cazo has green or blue oxidation, do not use it. Clean copper or stainless steel. Dulce is not worth poisoning anybody.
3. 3

   Reduce slowly

   Keep the milk at a steady simmer and stir every few minutes at first, scraping the bottom and corners of the cazo. After 35 to 40 minutes, remove the canela. As the mixture thickens, lower the heat to medium-low and stir constantly. The color should stay pale cream to light beige, not dark brown. This is macarrón de leche from San Marcos, not cajeta de Celaya. Cada estado, su propia cocina.

4. 4

   Find the punto

   Cook until the bubbles turn slow and heavy and the spoon leaves a clean path across the bottom for two seconds before the milk closes back in. At sea level, the thermometer will read about 238F to 240F. In Aguascalientes, because the city sits high, it will arrive closer to 226F to 228F. Trust the cold water test: drop a little candy into cold water. It should form a soft ball that holds together, then flattens when pressed between your fingers.

   If the drop dissolves, keep cooking. If it turns hard and glassy, you went too far. Thermometers help, but the señoras at the feria learned with water, fingers, and attention.
5. 5

   Cool before beating

   Take the cazo off the heat. Stir in the vanilla, then leave the candy undisturbed until it cools to 110F to 115F, about 25 to 35 minutes. Do not scrape the sides into the center. Big sugar crystals stuck to the pot will make the macarrón gritty. The fine sandy crumb comes from patience here, not muscle.

6. 6

   Beat the candy

   Beat the cooled candy firmly with the wooden spoon for 6 to 10 minutes. It will go from glossy and pourable to matte, thick, and heavy. The spoon will start to drag and the surface will look like damp sand. That is the moment. No me vengas con atajos. If you pour it while it is shiny, it will set sticky. If you beat after it is stiff, it will crumble before you shape it.

7. 7

   Press and score

   Scrape the candy into the prepared pan. With lightly buttered hands or a buttered piece of parchment, press it into an even slab about 3/4 inch thick. Score it into 24 bars while it is still warm, wiping the knife between cuts. If you want the fairground look, drag the back of the knife lightly across each bar to make shallow ridges.

8. 8

   Set and store

   Let the macarrón set at room temperature for at least 3 hours. Cut along the scored lines and wrap each bar in wax paper. The texture should be tender, matte, and finely sandy under your teeth, not chewy like caramel. Serve on a clay or talavera platón with coffee de olla or a glass of cold milk. Recetas probadas y garantizadas.

Chef Tips

• •Use whole cow's milk. Leche de cabra belongs to cajeta traditions like Celaya, not to this San Marcos version unless a local dulcera specifically tells you her family does it that way. A substitution is a compromise, not an upgrade.
• •Do not use sweetened condensed milk. That gives you a fast milk fudge, not macarrón de leche. The flavor here comes from fresh milk reduced slowly until the milk solids concentrate.
• •The copper cazo matters because it spreads heat evenly, but the spoon matters more. Keep the bottom clean, especially during the last 25 minutes, or one scorched streak will perfume the whole batch with burned milk.
• •Humidity changes sugar. If the day is rainy, cook to the firmer end of the punto and let the bars set uncovered for an extra hour before wrapping.

Advance Preparation

• •Macarrón de leche can be made up to 7 days ahead. Wrap each bar in wax paper and store in an airtight tin at cool room temperature.
• •Do not refrigerate unless your kitchen is very hot. Cold storage pulls moisture onto the sugar and can make the surface tacky.
• •If the bars soften after a humid day, unwrap them and let them sit at room temperature for 2 to 3 hours before serving.

Frequently Asked Questions

Nutrition Information

1 serving (about 50g)