Add all ingredients to a mixing glass with ice and stir until well chilled.
2.
Strain into a chilled coupe glass.
3.
Garnish with an orange twist.
Notes
A bit of history
The Martinez first appeared in print in the 1884 book The Modern Bartenders' Guide by O.H. Byron.
Which gin?
The first print version of the recipe didn't specify, but if you want to stick as closely as possible to the traditional recipe, make it with Old Tom gin.