|2 fl oz||Dewar's 12 Year Old Scotch whisky|
|1 fl oz||Martini Rosso vermouth|
|2 dash||Peychaud's or other Creole-style bitters|
|1⁄2 fl oz||Chilled water (omit if using wet ice)|
Difford's Guide remains free-to-use thanks to the support of the brands in blue above.
The Scotch answer to the Manhattan with added complexity courtesy of Peychaud's aromatic bitters.
This variation on the classic Rob Roy is recommended by author David Embury in his influential Fine Art of Mixing Drinks, and deservedly so.