[ber-neyz, bey-er-; French bey-ar-nez]
(sometimes lowercase) a sauce of egg yolks, shallots, tarragon, butter, vinegar, and sometimes white wine and chopped chervil.
Origin of Béarnaise
< French, equivalent to Béarn district in SW France + -aise, feminine of -ais -ese
Also called Béarnaise sauce.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
a rich sauce made from egg yolks, lemon juice or wine vinegar, butter, shallots, herbs, and seasoning
Word Origin for Béarnaise
C19: French, from Béarn in SW France
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
"egg-and-butter sauce," 1877, from French sauce béarnaise, from fem. of béarnais "of Béarn," region in southwest France (named for the Benarni, a Gaulish tribe).
Online Etymology Dictionary, © 2010 Douglas Harper