Whether you go for the milk or dark hot chocolate, you will be tasting the best hot chocolate on the planet, BARnone (forgive a pun). I don’t know what the magic ingredient is and I don’t care to know. The charming Parisian cafe in the heart of Harvard Square will always have my heart at hello. Don’t even bat an eyelash at the $4.50 for a large. You’d spend as much for a grande at Starbucks, and it won’t be half as good.