Book excerpt: Some of the best cocktails are the easiest to make, and author Kara Newman figured out the secret—using equal parts of the main ingredients and adding a dash of bitters or a splash of seltzer to gild the lily. Take the Cucumber Gimlet: Combine one part each vodka, lime juice, and lemonade; 2 cucumber slices; then garnish with a basil leaf! And beverages like this are a breeze to size up for parties—just double, triple, or quadruple the proportions. This book contains 40 simple recipes, from two-ingredient sips like the Bamboo Cocktail to timeless classics like the ever-popular Negroni, proving that great, artisanal cocktails don't have to come from a bar.