Hollandaise sauce is a traditional French sauce made with egg yolks, butter, and lemon juice. It’s whisked over gentle heat to create a silky, smooth consistency and is often used in dishes like eggs Benedict, asparagus, or salmon.
Fill a saucepan with a few inches of water and bring it to a simmer. Place a heatproof bowl over the saucepan, ensuring the bottom of the bowl does not touch the water.
In the heatproof bowl, whisk together the egg yolks, water, and white wine vinegar. Continue whisking until the mixture becomes pale and slightly thickened.
In a separate small saucepan, melt the butter over low heat. Remove it from the heat and let it cool slightly.
Gradually add the melted butter to the egg yolk mixture, whisking constantly. Add it slowly at first to ensure the sauce emulsifies properly.
Once all the butter is incorporated and the sauce is smooth and creamy, stir in the lemon juice. Season with salt and white pepper to taste.
Transfer the Hollandaise sauce to a serving dish and serve warm. If not using immediately, keep it warm over the double boiler, stirring occasionally.
Find it online: https://britishbakingrecipes.co.uk/mary-berry-hollandaise-sauce/