Custom and ritual, or their Hebrew equivalent minhag, has intrigued rabbis and scholars for generations. Here, Simcha Fishbane treats minhag from a socio-anthropological perspective. She discusses the theory and model of minhagim, using the Mishnah Berurah and the Arukh Hashulkhan, analyses rabbinic texts concerned with custom, and describes current rituals from a socio-anthropological viewpoint.