- Slowly melt the butter in a small pan. Try not to let it reach a boil.
- Add the egg yolk, lemon zest and cayenne pepper to your blender.
- Blend the egg yolk mixture at a medium speed for approximately 20-30 seconds.
- Switch the blender to its lowest speed, pouring the melted butter in slowly.
- Continue for 20-30 seconds more, until the butter is completely blended in.
- Taste the sauce, which should be buttery, with a lemon flavor, and lightly salted.
- You can correct the flavor by adding some lemon juice or salt.
- To thin the sauce, add some warm water and mix a bit more.
Kitchenware:
Kenwood blender