|1 1/2 fl oz||Rutte Dry Gin|
|1 dash||Angostura or other aromatic bitters|
|2 1/2 fl oz||Thomas Henry Ginger Ale|
A Pink Gin & Ginger would also be a fitting name for this tasty alternative to a Gin & Tonic.
As part of his long section on Highballs, in his 1948 The Fine Art Of Mixing Drinks David Embury notes, "Gin and ginger ale, with a dash of Angostura, is sometimes called a Gin Spider."