Prepare the soup Place beef and vinegar in a large bowl. Squeeze lime halves over beef mixture; rub meat with inside of lime halves. Rinse with cold water, and drain; return meat to bowl.

Banh xeo wields mass appeal, but the savoury crepe is one of the more complex dishes in the Vietnamese cook’s repertoire. There is no right or wrong way to make banh xeo but when done right, it should ...