La Noche Buena by Antonio Sacre, ill. by Angela Dominguez (Abrams, 2010.)
It's Nina's father's turn to have her for Christmas. He brings her from snowy New England to warm Miami to celebrate with his Cuban family. There, she helps her aunts and girl cousins make marinade, and then delivers it to her uncles, who are roasting a pig. Three days of cooking culminates in an outdoor feast on La Nocha Buena, a Cuban celebration of Christmas Eve.
I love picture books about family traditions, especially those involving food (actually, is there any other kind?) La Noche Bueno sounds heavenly!