Further to Alexander's email about the Roman Catholic tradition of eating
fish on Fridays, it's also helpful to remember that for many years Jews
shared London's East End with members of many nationalities, including the
Irish, who also were predominantly RC. Indeed, the divine Claudia Rodin
attributes the invention of fish and chips to the combination of the Jewish
tradition of frying fish in batter and the Irish heavy consumption of potatoes.

Roberta Sheps, Colchester, England