- 1 large egg yolk
- 2 Tbsp cold water
- 1 Tbsp fresh lemon juice
- Pinch cayenne pepper
- 4 tablespoons cold unsalted butter, cubed
- Place egg yolk into a large stainless steel bowl.
- Whisk in water, lemon juice, salt, and cayenne pepper.
- Add butter cubes.
- Place bowl over low heat.
- Whisk continually until butter melts and mixture gets foamy, about 3 minutes. Continue whisking over low heat until sauce is to your desired thickness, 3 to 5 more minutes.
Notes: 1 Tbsp is too much lemon.