mousseline sauce

noun

a light sauce, made by adding whipped cream or egg whites to hollandaise sauce

Word Origin for mousseline sauce

from French mousseline, literally: muslin

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