ROB ROY

Waldorf Astoria, New York, 1894.

COUPE
ETHANOL 23 G161 KCAL FROM ETHANOL3.52 OZ SERVED

SPEC

2 oz · 60 mlBLENDED SCOTCH40 %
1 oz · 30 mlSWEET VERMOUTH16 %
2 dashesANGOSTURA BITTERS44 %

1 oz taken as 30 ml in the metric column.

METHOD

  1. 01STIR ALL INGREDIENTS WITH ICE
  2. 02STRAIN INTO A CHILLED COUPE
  3. 03GARNISH WITH A CHERRY

1 oz taken as 30 ml in the metric column.

STRENGTH // WORKED

Pre-batch3.06 oz mixed with ice, 0.99 oz of it pure alcohol
MeltStirred: +15 % of the pre-batch, +0.46 oz of water
Served3.06 + 0.46 = 3.52 oz in the glass
Strength0.99 ÷ 3.52 = 28.0 % ABV as served
Ethanol0.99 oz × 29.57 ml × 0.789 g/ml = 23 g · about 161 kcal from the alcohol alone

IN THE GLASS

VANILLIN

FROM SCOTCH · from oak barrel aging

Formula
C₈H₈O₃
Mass
152.15 g/mol
IUPAC
4-hydroxy-3-methoxybenzaldehyde

Bourbon's fingerprint, extracted from the charred American oak the law requires for aging. Same molecule as the vanilla bean's signature, so a well-aged bourbon legitimately tastes like vanilla. Chemistry, not metaphor. Cognac, aged rum, tequila reposado all extract vanillin from oak too. Different barrels, same molecule.

GENTIOPICROSIDE

FROM SWEET VERMOUTH

Formula
C₁₆H₂₀O₉
Mass
356.33 g/mol
IUPAC
(3S,4R)-4-ethenyl-3-[(2S,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy-4,6-dihydro-3H-pyrano[3,4-c]pyran-8-one

The bitter from gentian root, used across Campari, Aperol, sweet vermouth, Angostura, and most amari. Bitter compounds activate TAS2R taste receptors that evolved to detect plant alkaloids. The same machinery that makes broccoli taste bad to children also makes a Negroni taste like an adult ordered it.

CHEMISTRY

Blended Scotch, sweet vermouth and Angostura. It is the Manhattan's Scotch variation: the rye's spice is replaced by the blended Scotch's mix of grain and malt whiskies, with a faint peat thread depending on the blend.

PROVENANCE

Created at the Waldorf Astoria to celebrate the opening of an operetta about the Scottish folk hero Rob Roy MacGregor. The recipe is the Manhattan template with scotch substituting for rye. A 'Dry Rob Roy' uses dry vermouth and an orange twist; a 'Perfect Rob Roy' splits half-and-half between the two vermouths. The cherry garnish distinguishes the standard sweet version.

WHISKEY // NEARBY