I took a day trip the other day with my friend Aki through Chianti. Our main destination was the Macelleria Tozzetti in Mercatale Val di Pesa (more on that later). It was a really beautiful day and after a couple of quick stops we ended up at the Osteria Le Panzanelle for lunch. This is a little road side place on the way to Radda (if you are coming from the north). Lunch was outside, with the breeze blowing and the sound of the small river running close by. We had an excellent bottle of local Chianti, and I had the Scottaditi for my secondo, which was very good. If you are in the area, give this place a try.
