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#ChefBart
USE CLARIFIED BUTTER. Not
just butter.

The quick version seems like he's making hot mayonnaise. Yeah, I know he compared hollandaise to mayo early in the video.

If I pulled that shit when I was in training my chef would have me peel grapes for a whole day.
Short cuts aren't always the solution. Most of the time flavor, texture, etc., aren't consistent. BUT! I'm not totally against it. I've just been conditioned to do it the traditional way.