Craft cocktails are in the midst of a renaissance, buoyed by rediscovered classic recipes, higher-quality ingredients, and increasingly talented bartenders. Pre-made mixes and artificially-flavored spirits are declining in popularity, as freshly-assembled natural flavors are ascending. But once you’ve had a truly great cocktail at a restaurant or bar, making one by yourself at home may seem challenging. The latest version of Perfect Drink ($40), Brookstone’s (and developer Pure Imagination’s) “app-controlled smart bartending” solution for iOS users, is here to help.

Perfect Drink has been through a few hardware and software revisions, but the latest-generation accessory and just-released version 3.0 app elevate it to greatness. The core of the product is a precise digital scale — recently upgraded from the original hardware — that works in tandem with your iPad or iPhone to eliminate the need for measuring cups. You call up a recipe in the Perfect Drink app and just add liquids until the scale and app tell you to stop, dynamically adjusting the recipe if you overpour. A just-released update enables the app to store a list of all the spirits, fruit, and mixers you have on hand, helping you quickly choose from recipes you’re capable of making…

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