What is nice about the app is it knows where you are and tells you the distance from the different Slow Food restaurants. In rural areas, that is, not the big tourist cities, reservations are not really needed. We were traveling mainly east and south of Rome in Molise and Puglia. I’ve read that 40% of Italian truffles come from Molise. It was summer so the fresh truffles were summer black truffles, which are the least valued, but we ate a lot of food with truffles and it was wonderful. I have heard that many of the Molise truffles go to Piemonte and are sold as local.
One more thing I forgot about Slow Food restaurants it that you never be disappointed–meals are a max of 35 euros without drink per person. You can pay much more elsewhere and get tall fashionable food, but it won’t necessarily taste better.