The pambazo takes the torta ahogada one step further, soaking the bread (which again shares a name with the sandwich) in a chili sauce, then frying it. Inside, fried potatoes and chorizo join refried beans, meat (ham or shredded beef are both common), cheese, and lettuce. It is not a lightweight sandwich.
The bread (and sandwich) take their name from the words pan basso, or low-class bread. It is a type of roll made from less good wheat, with more lard or butter than most, making it soft and all the better for a dip in a guajillo chili sauce before meeting the hot oil. The sauce imparts a bright-red glow to the bread, the frying spots it with dark, crisp bits to contrast the soft beans within. It’s a jumbled sandwich inside, with potato (diced and sautéed with the chorizo) jockeying for space between the meat and the bread with shredded lettuce and crumbles of soft white queso fresco. It’s only the thin drizzle of crema that pulls the whole mess together—this needs to be eaten quickly before it all falls apart.