Shamrock Cocktail — The Cocktail Ontologist

Louis' Mixed Drinks with Hints for the Care & Serving of Wines by Louis Muckensturm (1906, p.35)

2 dashes	curacao — Curacao	base
3 liqueur-glasses	Irish whiskey	base
	ginger ale — Ginger ale	dilution
1 lump	ice — Ice	other

Build in a star-glass with a lump of ice, top with ginger ale, twist lemon peel on top, and serve.

Garnish: Twist of lemon peel

Ice: Ice

Recipes for Mixed Drinks by Hugo R. Ensslin (1917, p.32) — Ensslin 1917

0.5 drink	Irish whiskey — Irish Whiskey	base
3 dashes	creme de menthe — Creme de Menthe	modifier
0.5 drink	French vermouth — French Vermouth	modifier
3 dashes	Green Chartreuse — Chartreuse (green)	modifier

Stir well with cracked ice.
Strain and serve with an olive in the glass.

Garnish: Olive

Ice: Cracked ice

This matters because it preserves a distinctly Irish whiskey aperitif branch shaped by green herbal liqueurs rather than the Scotch-vermouth canon alone.

The modifier set is the point here; the olive anchors the drink inside aperitif service despite the mint and Chartreuse.

Variants (2)