1/3 jigger Grenadine (1/2 oz)
2 dash Lemon Juice (1/2 oz)
1 dash Orange Juice (1/4 oz Cara Cara)
Shake with ice (I added a wide orange twist with the ice) and strain into a cocktail glass.
After returning home from Estragon, I was in the mood for a nightcap so I turned to Boothby's 1934 World Drinks & How to Mix Them. There, I spotted the Eureka which appeared like a gin version of a Ward Eight. Since I am at odds with the orange juice in a whiskey drink, I often tone down the orange juice and add orange bitters in that Boston classic; while orange juice and gin and not enemies as shown in the Monkey Gland and others, I still kept to this concept and shook the drink with an orange peel here instead of adding orange bitters.