Sauce béarnaiseTarragon butter sauce
Sauce béarnaise was created in the 1830s at a restaurant in Saint-Germain-en-Laye near Paris and named after the Béarn region, home of King Henri IV, and it is still the sauce French families serve with steak and frites on special evenings. Egg yolks are whisked over gentle heat with a sharp reduction of vinegar, shallot and tarragon, then thickened with warm butter into a glossy, tangy sauce. The yolks are only lightly cooked, so use pasteurised egg yolks if serving anyone pregnant, very young, elderly or with a weakened immune system. The common mistake is too much heat, which scrambles the yolks. Chef's tip: if the sauce starts to look grainy, whisk in a teaspoon of cold water off the heat at once.
























