An Ofrenda is a traditional food placed at an altar in churches and homes to commemorate the departed on El Dia de los Muertos, which takes place annually on the first 2 days in November. Celebrated in many Latin American cultures, El Dia de los Muertos originated in Mexico combining the minor feast days of the Catholic calendar (All Saints and All Souls Days), aspects of Spanish traditions as brought to Mexico by the conquistadores, and Aztec rituals of the indigenous people of the region.
Bain-Marie. A water bath - a container of warm water in which smaller pot(s) rest to provide slow, even cooking, protecting the extremities from over colouring. Ideal for sauces and custards or for keeping food hot. Au bain-Marie refers to food which has been so cooked. This is apparently named after Moses' sister, Mary, who was a chemist or after the Virgin Mary.
