A classic tiny Italian trattoria complete with only 5 tables, 5 e Cinque specialized in seasonal, organic, high-quality vegetarian cuisine. The menu is exactly the right size--not overwhelming but with a big enough selection to keep both vegetarians and vegans alike quite happy. The menu also changes often, if not daily, which is the sure sign of a top-notch eatery, in my opinion.
5 e Cinque specializes in chickpea pancakes called "cecina," which are 100% vegan (made with chickpea flour, olive oil, and salt), unless you order them with a slab of highest-quality sheep's milk cheese on top. Other than cheese, they also come plain or topped with grilled vegetables that vary with the season. For my main course, I ordered a pilaf-like dish of barley and swiss chard with caramelized onions and roasted potatoes on the side. Absolutely mouthwatering and completely unexpected. My aunt introduced me to the restaurant with no pretense other than that it was organic and vegetarian, but I had no idea that I could find an incredibly wholesome, healthy meal there complete with whole grains, leafy greens, and protein (in the form of my favorite bean of all: the chickpea). The salads on the menu also looked quite good. Unfortunately, the restaurant only featured non-vegan desserts, but there is a gelateria right across the piazza with delicious vegan sorbets to satisfy your sweet tooth.
I plan to patronize 5 e Cinque quite often during my next few visits to Florence. It is truly an organic, vegetarian gem in the city.
See pictures and more restaurant reviews at my blog: http://farmersmarketvegan.wordpress.com/