Reminiscent of a light, bright hollandaise, béarnaise sauce is a French classic that begins with a rich, smooth base of egg yolks, butter and vinegar. Citrusy notes of tarragon as well as alliums like onion and garlic round out our version of this bistro staple, which you’ll love warmed and spooned over seared steak, juicy burgers, baked salmon and delicately steamed vegetables.