Family

Mixed Drinks by Herbert W. Green (1895, p.55)

0.25 lemonlemon juice — juice one-quarter lemonbase
1 jiggerrum — N. E., Jamaica or St. Croix rumbase
1 large spoonfulsimple syrup — syrupsweetener
  1. Fill a mixing glass two-thirds full of fine ice and add the ingredients.
  2. Shake, strain into a star champagne glass, and add fruit.

Garnish: Fruit.

Ice: Fine ice

This is a useful rum-sour checkpoint because it keeps multiple regional rum types interchangeable inside one late-century formula.

The drink stays short and shaken, without turning into a fizz or punch cousin.

The Mixicologist by C. F. Lawlor (1895, p.62) — C. F. Lawlor 1895

0.25 wholeLemon juice (fresh) — lemon juiceacid
0.66 wholeice — fine icebase
2 ozrum — N. E., Jamaica or St. Croix rumbase
Seasonal fruit — fruitgarnish
1 tbspsimple syrup — syrupsweetener
  1. Fill the mixing glass two thirds full of fine ice.
  2. Add the lemon juice, syrup, and rum and shake well.
  3. Strain into a star Champagne-glass with fruit.

Garnish: Seasonal fruit

Nose
Rum and lemon rise cleanly with a cooler sweetness than the darker spirit sours.
Palate
It is a direct sour, but the allowed range of rum styles makes it especially useful for tracing how broad the family could be in practice.
Finish
The finish is bright, sweet-tart, and rum-led.
Summary
A rum branch of the codified late sour line with unusually explicit base-spirit flexibility.

Rum Sour is significant because it shows the sour family expanding across rum categories in a way that starts to point toward later rum sours and, at a distance, Daiquiri logic. It is a clear transitional node rather than just another sour variant.

Because the permitted rums vary widely, balance matters more than strict stylistic orthodoxy.

Compared with Whiskey and Brandy Sour, this version can swing much more dramatically depending on the rum used. That flexibility is historically interesting, not a flaw.

Bartenders' Guide: How to Mix Drinks by Wehman Bros. (1912, p.66)

3 dashlemon juice — Lemon juiceacid
ice — Icebase
1 wine-glassrum — Rumbase
1 squirtseltzer — Seltzerdilution
fruit — Fruitgarnish
0.5 tablespoonsugar — Sugarsweetener
  1. Fill the glass with ice, add the sugar, lemon juice, seltzer, and rum, stir well, strain into a sour glass, dress with fruit, and serve.

Ice: Ice

L'Art du Shaker by Dominique Migliorero (1925, p.59)

1 glassrum — Rumbase
  1. Prepare following the Brandy Sour method, replacing cognac with rum.

The Old Waldorf-Astoria Bar Book by Albert Stevens Crockett (1935, p.96)

0.5 lemonlemon juice base
1 jiggerrum base
1 ponywater dilution
0.5 spoonsugar sweetener
  1. Shake and strain over fruit.

Ice: Ice

Related recipes

Lineage reconciliation

See also: Brandy Sour

Cross-reference recipe; the source instructs using the Brandy Sour preparation with rum substituted for cognac.