From @Brian Lagerstrom
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Ingredients
Melt butter gently over low to 175°F/80C (no sizzling).
In blender: yolks, vinegar, salt, cayenne, Worcestershire, Dijon; spin 5–10 sec.
With blender running, stream in hot butter; blend until very thick.
Transfer to saucepan; over lowest heat, whisk in 2 T water to saucy consistency. Hold warm (130–140°F), not simmering.
Tastes great served on eggs benedict or over veggies or any pan roasted or grilled protein.
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Technique
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