In a heatproof bowl, set over (but not touching) simmering water, whisk together yolks with 1 tablespoon water until fluffy and doubled in volume. Whisk in butter until melted and well combined; mixture should thicken and coat the back of a spoon. Season with salt, cayenne pepper, and lemon juice. Let stand at room temperature until ready to use, up to 1 hour.
My experience with this sauce was not good. It never whisked up in volume and remained grainy. I tried the blender as shown on TV and that did not good at all. Plus, no indication of how much salt pepper and lemon juice to add. Mine was not a good experience.
Are the yolks supposed to be cooked or raw?
This was the best hollandaise and so easy! I love the fact that you don't melt the butter. My sauce stayed thick and rich. Easily cut this in half and it was still perfect!