October 15, 2026 · Weekly Edition

The Bourbon Ledger Bourbon, Read Straight.

The Bourbon Ledger · Instrument

The Cocktail Architect

Your taste. Your bottles. Your next experiment.

Not a recipe generator. A place to start from a documented build, change exactly one thing, and find out what that change actually did.

Step 1

Start with your bottle

Pick one the Ledger has reviewed, or type in what you actually own. Proof is the only thing used in the arithmetic — we won't guess at flavour from a mash bill, an age or a number.

Reviewed bourbons
Or enter your own

Proof is just double the alcohol percentage — a 100-proof bourbon is 50% alcohol. It's the number on the label. It's optional here: without it the arithmetic reports what's missing rather than inventing anything.

Step 2

Two questions

Two questions cannot know your palate, and this doesn't pretend to. They narrow a menu. Skip either one and the suggestion simply widens.

Do you want to taste the whiskey, or something more refreshing?
Lemon and lime — essential, or not your thing?

This is the question that sorts almost everything — acid decides technique, texture, glassware and dilution all at once.

Step 3

A starting point — not a match

All four builds below are documented or attributed. Pick whichever problem interests you.

We have not tasted anything on your behalf. These are structural suggestions. The only way to find out is to make one.

Two words you'll meet below. A modifier is whatever sweetens and softens the whiskey — vermouth, amaro, a syrup; it's not a flavouring, it's a third of the glass. Dilution is the water that melts in while you mix, which is an ingredient whether you measure it or not.

  • Standard build — we haven't tasted this one

    Measurements are the common modern ones

    The Black Manhattan

    The same architecture with a different class of modifier. Amaro replaces vermouth in the sweetening slot — bitterer, sweeter and considerably stronger, so three things move at once.

    2 oz
    Bourbon
    1 oz
    Amaro Averna
    1 dash
    Angostura bitters
    1 dash
    Orange bitters
    1
    Brandied cherry

    Assumed strengths: Orange bitters 28%. These are generic ingredients with no single strength — real bottles vary, so this figure is a stand-in, not a universal value.

    32.2% as written, stirred — calculated, not tasted

  • Standard build — we haven't tasted this one

    Measurements are the common modern ones

    The Boulevardier

    Two modifiers, not one. Bitter and sweet occupy separate slots, and the bourbon has to hold its ground against both.

    1½ oz
    Bourbon
    1 oz
    Campari
    1 oz
    Sweet vermouth
    1 wide swath
    Orange peel

    Assumed strengths: Campari 24%, Sweet vermouth 17%. These are generic ingredients with no single strength — real bottles vary, so this figure is a stand-in, not a universal value.

    24.9% as written, stirred — calculated, not tasted

    Harry McElhone, Barflies and Cocktails (Paris, 1927) — records Erskine Gwynne's drink. The original proportions are disputed and commonly read as equal parts; the 1½:1:1 here is the common modern build, not McElhone's.

  • Standard build — we haven't tasted this one

    Measurements are the common modern ones

    The Manhattan

    The modifier dilutes as it sweetens. Vermouth occupies a third of the glass — change the ratio and four variables move at once.

    2 oz
    Bourbon
    1 oz
    Sweet vermouth
    2 dashes
    Angostura bitters
    1
    Brandied cherry

    Assumed strengths: Sweet vermouth 17%. These are generic ingredients with no single strength — real bottles vary, so this figure is a stand-in, not a universal value.

    29.3% as written, stirred — calculated, not tasted

    Jerry Thomas, The Bar-Tender's Guide (New York, 1887 edition) — the Manhattan's first appearance in print. Documents the drink's emergence; its proportions differ from the modern 2:1 build used here.David Wondrich, Imbibe! (revised edition, Perigee, 2015) — on the Manhattan's origins in 1880s New York. Historical context only; not a source for these proportions.

  • Standard build — we haven't tasted this one

    Measurements are the common modern ones

    The Old Fashioned

    The control. Spirit, sugar, bitters, water — the 1806 definition, still standing.

    2 oz
    Bourbon
    1 tsp
    Rich demerara syrup (2:1)
    2 dashes
    Angostura bitters
    1 wide swath
    Orange peel

    34.5% as written, stirred — calculated, not tasted

    The Balance and Columbian Repository (Hudson, NY), 13 May 1806 — the first printed definition of "cock-tail": spirits of any kind, sugar, water and bitters. Defines the CATEGORY; states no quantities.

  • Standard build — we haven't tasted this one

    Measurements are the common modern ones

    The Whiskey Highball

    The simplest architecture there is. Nothing competes with the bourbon except water and gas, which makes it the cleanest place to see what carbonation and dilution each do on their own.

    2 oz
    Bourbon
    4 oz
    Soda water, well chilled
    1 wide swath
    Lemon peel

    16.7% as written, built in the glass — calculated, not tasted

  • Standard build — we haven't tasted this one

    Measurements are the common modern ones

    The Whiskey Sour

    Acid changes the architecture. One question — is there acid? — determines technique, texture, glassware and dilution target all at once.

    2 oz
    Bourbon
    ¾ oz
    Lemon juice, fresh
    ¾ oz
    Simple syrup (1:1)
    1
    Lemon wheel

    18.6% as written, shaken — calculated, not tasted

    Jerry Thomas, How to Mix Drinks; or, The Bon-Vivant's Companion (New York, 1862) — the first printed whiskey sour. Specifies sugar, lemon and "a wine-glass" of whiskey; gives no ounce measures, so it cannot source this build.