Creators of the online cocktail guide digital.diffordsguide.com, have come out with an app for the iPhone, iPhone3G & iPod Touch, making it even easier to make drinks at home. Based on the book Cockails Made Easy—which offers up more than 500 cocktail recipes using just 14 ingredients that are easy to find in your liquor cabinet, all of the cocktail recipes are courtesy of top British drinks aficionado Simon Difford. Each has a step-by-step guide, tips and a photograph accompanying it, as well as a user rating system. Both the book and the app are based on a condensed version of the professional edition of diffordsguides Cocktails, which contains more than 2,250 recipes and no doubt sits on your favorite professional bartender’s bookshelf.

From the comfort of your home bar, you can search for drink recipes by ingredients, ratings or drink name. One of the coolest features is the Cocktail Cabinet—just click off which bottles you already have at home and up pop all of the recipes you can make with those spirits. Got “mixologist’s block?” Just shake the phone and it will randomly select a drink for you. For only $2.99, this app makes Happy Hour easy. —Denise Shoukas