Old Tom Gin
What it is:
Gin
Substitution:
gin (London Dry)
Further reading:
http://en.wikipedia.org/wiki/Old_Tom_Gin
A lightly sweetened Gin popular in 18th-century England that now is rarely available. It is slightly sweeter than London Dry, but slightly drier than Dutch/Holland Gin/Jenever, and is thus sometimes called 'The Missing Link'.