These beef tamales are just like the tamales my Abuelita used to make for special occasions. This recipe makes a lot, but if you're going to go through all the trouble of making tamales from scratch, you might as well have a party! You will need butchers' twine and a large pot with a steamer basket to make these.
For fork-tender beef, maintain a gentle simmer and shred finely for even distribution in the masa. Toast ancho chiles briefly to release their aroma before grinding; adjust red pepper flakes for desired heat. The masa dough's consistency is key: beat lard until fluffy, then gradually add reserved beef liquid until it resembles soft cookie dough—pliable, not sticky. This ensures light, airy tamales. During steaming, maintain a steady simmer and monitor water levels; tamales are ready when the masa peels cleanly from the husk. Properly rehydrated corn husks prevent tearing during assembly.