Smith and Kearns recipe

It's a "Smith and Curran" and although it may sound like a girlie drink, it popular among hard-drinking oil wildcatters in 1940's and 1950's North Dakota.

It should never be made with Kahlua or milk: use creme de cacao (white preferably) and heavy cream.

There are countless variation of this drink and I would be hesitant of any recipe that calls itself the "real" one.

Also, 1/2&1/2 or cream would probably add more body but may not let the CO2 do its thing. One thing is for sure, do not use skim milk for this one.

Sorry, Mixer Mike---although there might now be variations, it is true, the first Smith and Curran was developed by oil men Wendel Smith & his partner Curran in North Dakota during the oil boom there in the 40's and 50's and indeed the original recipe consists of creme de cacao, cream and soda.