Béarnaise/Bernaise Sauce (residue)

After some pushback that this spelling had changed, I was able to find several newspaper results, some even from Quebec, which confirms the change.

The original spelling still resides on some recipe websites.

As can often happen when names and spellings are changed, you get articles that include both versions of the word.  For instance, the following article uses the old spelling in the title but the new spelling in the text.