Welcome to Bernaise Source, the blog of Dan Greenfield, principal of Bernaise Source Media. What is Bernaise Source? The name Bernaise Source is a play on words. It’s a nod to the grandfather of PR — Edward Bernays. It’s also an allusion to béarnaise – the rich sauce. Bernaise Source is the source for those who appreciate the power of rich new media, but also respect the value of traditional media.