No fish sauce in a roux. I could just imagine how it would smell cooking flour in oil with fish sauce. And you're just so happen to be conversating with someone whom actually photographs their roux to show others how perfect it is./facepalm
My bad, I know fish sauce is an accent to many things & somehow had one of my typical dyslexic thought spirals …. And assumed that the roux had some type of fish sauce (and this anchovy) in it…..
I mean just look at it. That perfect dark roux color, consistency of melted chocolate and that shine!! Oh my that is gonna make one hell of a pot of gumbo