
Saline solution is salt dissolved in water and dosed by the drop, a way of salting a drink without a rim or a crunch.
A dash or a few drops damp bitterness, round off acidity and make a drink taste a little sweeter. At that level nobody tastes the salt itself.
Homemade saline
Stir 20 g of fine salt into 80 g of warm water until it dissolves: that is the common 20% saline.
Fine salt
A tiny pinch added with the other ingredients does the same job, though it is harder to dose.
Without salt
Leaving it out is fine too. The drink just tastes a little duller.
Salt water does not spoil. Keep it capped so it does not concentrate by evaporation, which would quietly make every dose stronger than the last.
Rhubarb Gimlet
London dry gin