Family

Anleitung zur Bereitung Amerikanischer Eis-Getraenke by The Continental Bodega Company (1898, p.7) — Anleitung Amerikanischer Eis-Getraenke 1898

0.5 gobletPorter — Porterbase
0.5 gobletchampagne — Champagnerother
  1. Fill a goblet half full with porter, fill the remainder with champagne, stir carefully with a spoon, and serve.

New and Improved Bartenders' Manual by Harry Johnson (1900, p.209) — Harry Johnson 1900

0.5 glassPorter — Irish porterbase
0.5 glasschampagne — champagneother
  1. Fill a large-sized goblet half full with porter.
  2. Fill the balance with champagne.
  3. Stir up slowly with a spoon and serve.
Nose
Malt and sparkling wine make an unexpectedly plush nose, with roasted beer notes softened by lifted fruit and fizz.
Palate
This is a hybrid social drink, half novelty and half luxury, with porter depth and champagne brightness producing a smoother and richer effect than either alone would suggest.
Finish
The finish is creamy, sparkling, and faintly bitter.
Summary
An expensive champagne-and-porter hybrid that preserves the pleasure of bar-room novelty inside a serious manual.

Johnson's note that the bartender should ask what brand of wine the customer desires is a useful reminder that luxury drinks were partly acts of social signalling. Champagne Velvet also keeps alive a mixed-beverage line that is harder to see if one only studies canonical cocktails.

The drink must be stirred slowly. Johnson is managing foam, texture, and appearance all at once.

Jack's Manual by J. A. Grohusko (1908, p.28) — Grohusko 1908

0.5 gobletPorter — porterbase
0.5 gobletchampagne — champagneother
  1. Fill the goblet half full of porter and the balance with Champagne.
  2. Stir slowly and carefully and serve.
Nose
Malt and sparkling wine meet unexpectedly on the nose.
Palate
This matters because it preserves one of the key beer-and-Champagne crossover forms still alive in pre-war service books.
Finish
The finish is creamy, fizzy, and slightly bitter.
Summary
A porter-and-Champagne hybrid from the sparkling crossover branch.

Jack's Manual by J. A. Grohusko (1910, p.44)

0.5 gobletPorter — Fill goblet half full.base
0.5 gobletchampagne — Balance with champagne.other
  1. Fill the goblet half full of cold porter and balance with cold champagne.
  2. Stir slowly and carefully and serve.

The Buffet Blue Book by John H. Considine (1912, p.27)

0.5 gobletPorter — Fill goblet half full.base
0.5 gobletchampagne — Balance with champagne.other
  1. Fill a goblet half full of cold porter.
  2. Balance slowly and carefully with cold champagne, stir with a spoon, and serve.

Bartenders' Guide: How to Mix Drinks by Wehman Bros. (1912, p.69)

0.5 glassPorter — Porterbase
0.5 glasschampagne — Champagneother
  1. Fill the goblet half full with porter and the balance with champagne, stir slowly with a spoon, and serve.

Julian's Recipes by Julian Anderson (1919, p.18)

1 quartchampagne base
1 bottleIrish porter dilution
  1. Stir the Champagne and Irish porter slowly with a spoon in a pitcher.
  2. Serve in a large size goblet.

See also: Arf and Arf, Royal Cup

Source specifies both ingredients should be cold.