Frati Gelato (http://www.fratigelatocafe.com/) is a new, much needed gelateria in downtown Fullerton (Commonwealth just west of Harbor). The gelato is made on site by Dr. Anthony LuPriore who studied in Italy with Luca Caviezel, and the recipes and methods are authentic to traditional gelato making. Of course, the proof is in the eating and this gelato is excellent. There are about 10-12 flavors available every day, including the traditional choices straicatella, cioccolato, vaniglia, and a number of fresh fruit flavors straight or in combination. There are some more "modern" flavors such as peanut butter and a number of sorbeti made with fresh fruit. I have tried about ten of the flavors of both gelati and sorbeti and have not been disappointed, although I should point out that I am a traditionalist and stick with those flavors.
Dr. LuPriore and his family are delightful hosts and it is a very relaxed and friendly place. They also have panini that look quite good as well as Italian influenced coffee drinks.