Recalentado literally means reheated leftovers, which practically refers a get-together afternoon after a big party which last until wee hours.
This is a long-standing tradition rooted throughout Mexico, quite in keeping with the festive and generous character of the Mexicans.
Christmas morning normally starts this way: everyone bring the gifts they have received, and all pitch in the get the house in order. As afternoon gives way to evening, it's time to eat again. The menu is festive, but lighter.
Pozole (stew made from dried large white corn kernels simmered for hours) is a traditional way to stretch the recantalado.
See Celebraciones Mexicanas: History, Traditions, and Recipes by Andrea Lawson Gray, Adriana Almazan Lahl to learn more.
Spanish is the official language of Mexico. Check out advice on how to learn Spanish and never forget it, shared by Babbel.com.