Why is curry called Ruby Murray?

Dawn asks:

"Can anyone tell me where the term ruby murray (meaning curry) came from, as my brothers unfortunate enough to have a name that sounds a lot like ruby murray so ive been wondering bout this for years!"

Ruby Murray is classic Cockney Rhyming Slang for curry. I can tell you that around these parts "going out for a Ruby" is a most popular pastime. That's probably why there are so many Indian restaurants in London called simply "The Ruby".

Ruby Murray was a popular singer in the 40s and 50s. There is a web site dedicated to her: http://www.rubymurray.org/

I wonder though if her name lives on through Cockney Rhyming Slang more than in does through her music?