My favorite cocktails, part 6: the Manhattan

It's hard to beat a Manhattan for several reasons.  First, they taste great.  Second, the ingredients are cheap and easy to find.  Third, they are easy to make (i.e., it's hard for you, your significant other, or your random bartender to screw one up).  Fourth, the template opens the door to a number of exquisite variations.

This recipe works beautifully:

2 oz rye whiskey
3/4 oz sweet vermouth
2 dashes Angostura bitters
Stir on ice, and strain into a cocktail glass. If you can find a Luxardo maraschino cherry, garnish it with that.

Substitute Punt e Mes vermouth to make a Red Hook.
Make it with Carpano Antica Formula vermouth, Fee Brothers Old Fashion bitters, and add Marie Brizard Apry (apricot brandy) and you have a Davidson or a Goodbye Marie.
Consider sherry, another fortified wine, or (now we're stretching it) an Italian amaro instead of sweet vermouth.
Add a little Benedictine or Chartreuse.
Some people prefer or have better access to bourbon, so they make bourbon Manhattans.
You like blended scotch better than rye or bourbon? Make it a Rob Roy.
Rum blends very well with sweet vermouth, too!