Bronx

It is a relic from the old days of American "Prohibition" and was originally made with "gin a hammer", of very dubious quality. A good dry gin certainly improves the cocktail. The latter can be made drier or sweeter by varying the proportions of dry and sweet vermouth.

Three parts of dry gin;
A piece of orange juice;
Half a part of dry vermouth;
Half a part of sweet vermouth;
Cubos de gelo;

Place four ice cubes in a shaker, add the gin, orange juice and vermouth and shake well.
Pour into a cocktail glass and serve without any decoration.