Im in love with Bosa donuts. I recently moved to Arcadia and since I 've found Bosa I have been back 3 times, in just over a week.
The donuts are some of the best I have ever had. The buttermilk bar is amazing, my favorite. With the crumb donuts in close second. They have everything from bear claws to cinnamon buns, and all the donuts are always fresh, I have never gotten 'old' donuts that taste like they have been on the shelf to long. They even serve lunch sandwiches which most people don't know.
I highly recommend going to this place, but don't plan on leaving with less than a dozen donuts. After you walk in and see them you wont be able to resist.