Bearnaise sauce recipe is something you will want to keep handy as it makes up quickly with only 4 ingredients, it is an economical lift to many dishes.
Place the shallots with the wine vinegar into a small saucepan and simmer until it has reduced and you have one tablespoon left.
Place a basin over a pan of hot water on a low heat creating a bain marie.
Sieve the contents of the pan, the shallots and wine vinegar, into the basin.
Add 1 tablespoon of water and 1 tablespoon butter to the wine vinegar.
Add the beaten egg yolks and begin to whisk them with a small whisk until the sauce begins to thicken.
Do not allow the sauce to boil, keep it simmering, then add the rest of the butter, whisking it in a little bit at a time until it has all been incorporated into the sauce.
When the sauce is creamy, and smooth, add the tarragon and parsley, herbs, and taste it to see how much salt and pepper you need to add to it.
Serve your sauce warm and not hot, because if heated too much, it will curdle and separate.
This is how you make a very ordinary dish into a special occasion!
Notes
Bring all the ingredients to room temperature before making the recipe. This will enable the ingredients to mix more smoothly.
Use fresh herbs if possible.
When it comes to cooking the sauce, stay with it and keep it stirred; it will cook faster than you think.