Brut Cocktail, as printed in The Old Waldorf-Astoria Bar Book, 1935, a collection of Pre-Prohibition, Classic Cocktails.

Brut

2 dashes orange bitters
1/2 jigger of French vermouth
1/2 jigger of Calisaya
1 dash absinthe

Stir in iced mixing glass and strain into chilled cocktail glass.

"An extremely 'dry' cocktail. 'Brut' (French) means 'raw.'  Many customers pronounced it 'Brute,' and so thought it."

The Old Waldorf-Astoria Bar Book