Cocktails by Pedro Chicote (1928, p.200) — Booth's and solera Osborne

0.5 copitagin — Gin Booth'sbase
7 dropsorange bitters — Source gives 6 to 8 drops.base
0.5 copitasherry — Solera Osbornemodifier
  1. Shake and serve in a cocktail glass.

Ice: 3 to 4 pieces ice

This matters because it preserves another Spanish sherry-and-gin aromatic line with a specifically branded solera reference.

See also: Osborne Cocktail, Gin Cocktail