Let's not look down our nose at the basics. A solid five-bottle bar -- gin, vodka, rum, tequila, and bourbon -- with a few mixers and tools (a cocktail shaker, a jigger or two) can anchor one hell of a cocktail party, and is perfectly serviceable for at-home happy hour. But once you've mastered Mixology 101, it's only reasonable to long for the next level: Classic cocktails with bitters and liqueurs, great garnishes, and exotic ingredients.

When you're looking to upgrade your home bar, consider these 10 additional tools and spirits, each of which will help your cocktails reach new heights in quality and creativity.