Quote:
Originally Posted by RoundGuy
This makes no sense. What is a "religious practice", without a defined "religion"?
The OP explains it fairly well.
Fwiw people tend to say "italian food" even if the food has never been in italy and the people who made it have less italian genes than Genghis Khan.
"Derived from <x>" you can assume such expressions to mean - they are common language constructs.