As I said on Facebook, when someone is NOT from a certain culture (or even married to the culture), they're appropriating it.  And if they ARE, then they're bastardizing.  Yeah, if I opened a HK style diner (cha chaan teng) in a hip part of the city serving, oh, I don't know, ham and macaroni soup au gratin (because the type you'd get at such diners would NOT be au gratin), then I'm bastardizing since my family is from Hong Kong.  However, if a non-HK Canadian friend of mine did so, then he/she would be appropriating.  Can't go either way.