How can something so simple go so wrong so often? Phoenix is a veritable citrus mecca, yet drinks bearing no trace of lemon get passed off as lemonade here every day. And don't get us started on how people have served us Crystal Light with a straight face, as if we wouldn't know the difference. Lemonade is simple; there's no need for creativity, tricks or gimmicks. Or artificial sweeteners. If you like your lemonade tart and straightforward, Jamba Juice does it just right. Buried amidst a lengthy menu of smoothie combinations, it's easy to overlook the almost quaint listing of lemonade. But it's there -- so satisfyingly sour, with just a little sweetness, and chilled with plenty of slushy ice. Pucker up.