I absolutely love Puro and would recommend it to anyone visiting Prague. First of all, it stocks some great vegan food to buy, including Field Roast and Tofurkey products, B12 vitamins, chocolate spread, Cliff and Nakd bars, some good chocolate and ice creams.
And secondly, the food in the cafe is lovely. In the summer there was an ice cream station outside where you could choose a combination of fruit/nuts to blend into the ice cream. The regular features on the menu are bagels and raw sushi (delicious!), and there are daily specials too. The raw spring rolls in the summer were delicious, and everything else I've tried has been lovely. There are lots of sweet treats on the counter as well, though I've resisted so far. The staff are really lovely too.