I resisted the Purple Cactus for a long time because it felt too sterile. What I finally realized is that it's a fine place for a quick and relatively healthy dinner. Anything with black beans is good, the salads are pretty good, and the thing I still crave, from my new abode in Somerville, is the limeade. On a hot summer day nothing is better than that limeade. They have some silly name for it, but it's limeade, and man, is it good.
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