This week in Interfacing, we focus on Cocktail Builder, a site that’s here to help you make sense of that catastrophe you have the audacity to call a bar. We know how it is. You planned on having a truly brilliant bar in your new place. Spiced Jamaican rums, Italian vermouths, Russian vodkas, and the freshest limes and real bitters. Instead, you’ve got a bottle of store brand vodka, two day-old lime wedges, and the last swig of a fifth of Tanqueray. How are you expected to make something like this work? Not to worry, hop onto Cocktail Builder and tell the engine exactly what you’ve got stocked in your bar, and it’ll tell you what drinks you can scrap together. Only got some Raspberry Smirnoff and a bottle of ginger ale? Now you’ve got Raspberry Fizz. Only have orange juice, gin and bitters? Now you’ve got Bitter Orange. For all those moments when you wished you had taken that bartending class, there’s Cocktail Builder.