1⁄2 oz Dry vermouth
1⁄2 oz Bénédictine
1 twst Orange peel (as garnish)

Stir; strain; cocktail class, squeezed orange peel


First shows up in Hugo Ensslin's 1917 as "Brain Storm" as well as in the 1930 Savoy Cocktail Book as "Brainstorm" which is the more common rendering. Older recipes calls for two dashes each of Bénédictine and French vermouth and most modern recipes call for ½ oz each (since a dash during these period is often quite ambiguous and typically larger).

Cocktail summary
Posted by mako on 3/19/2022
Created by
First described by Hugo R. Ensslin
Is an
authentic recipe
Not yet rated
4 stars
(6 ratings)
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Very nice indeed. Didn't have an orange twist, so added a dash of Angostura Orange bitters.