In a collins glass, pour 1 oz. VodkaPretty straight-forward. But then there's more...
2 oz. Sweet and Sour
Fill with soda water
Garnish with a cherry.
Substitute the vodka for Gin, and you have a Tom Collins.
Substitute the Gin for Scotch, and you have a Joe Collins.
And last one: making a Joe Collins without the cherry is called a Joan Collins.