Sauce Tyrolienne (Béarnaise, Oil)

This 3rd generation mother sauce derives from Sauce Béarnaise. The only difference is that butter is replaced with a neutral tasting oil. Commonly served with grillet meat or fish.

Sauce Béarnaise:
1 Tbsp. white wine or champagne vinegar (15 g)
¼ cup dry white wine (60 g)
2 Tbsp. fresh tarragon, minced, divided (5.3 g)
1 Tbsp. shallots or onions, minced (10 g)
3 egg yolks
1 Tbsp. water, cold
½ cup neutral-tasting oil, warmed (113 g)
¼ tsp. sea salt
¼ tsp. white peppercorns, freshly ground

Make the Béarnaise:
In a small saucepan, add the white wine vinegar, white wine, 1 Tbsp. of minced tarragon, and the minced shallot. Cook over medium-low heat until you're left with just 1 Tbsp. of liquid in the pan. Let this mixture completely cool.

In a medium bowl set over a small saucepan filled with gently simmering water (set over low heat), add the tarragon-vinegar reduction along with the egg yolks and 1 Tbsp. of cold water. You can either strain the reduction for a smoother sauce, or simply combine it as is with the egg yolks and water. Constantly whisk the mixture together until it's thick enough to look like runny pudding.

Pour the warmed oil, 1 Tbsp. at a time, into the mixture. Whisk the mixture well after each addition (basically, pouring the oil should NOT be a gradual stream but rather a drop by drop process). Once combined, whisk in kosher salt and freshly ground pepper. Taste test for seasoning add more salt or pepper, if desired. The final sauce should be thick like mayonnaise, but still stream off your spoon in a very slow and steady manner. Stir in the remaining Tbsp. of tarragon.

Serve right away.

Makes about 1 cup.

If You Can't Serve Right Away:
Keep warm over a double boiler (ban-marie) until ready to serve. The best holding temperature is about 145°F (63°C). This temperature both discourages the growth of bacteria and is hot enough to keep the fat in your Hollandaise from solidifying. For both food safety and quality control, Hollandaise should not be held any longer than two hours.

How to Fix a Broken or Curdled Hollandaise:
If your Hollandaise breaks or curdles, it’s salvageable. Pass through a chinois (fine mesh seive) to strain out any curdled portions of the Hollandaise. Make sure to keep the whole strained portion of the sauce warm. Add 1 yolk plus 1 Tbsp. of warm water to a new stainless-steel mixing bowl and whisk in your strained Hollandaise. Voila!

Consistency Issues:
If your sauce is too thick, you can stream in a little warm water (a drop at a time) to loosen it up.

If your sauce is too thin, take a clean bowl and set it over a small saucepan with gently simmering water. Whisk an egg yolk with a drop of cold water in this clean bowl. Very slowly add your sauce, drop by drop (like you did with the melted butter), into the egg mixture and continue stirring until it thickens up to your desired consistency.

If you start getting some slight clumps, you may be able to fix the sauce by quickly moving the bowl over to an ice bath to stop the cooking. Then you can vigorously whisk the clumps out. If it's not working, it's best to start over.