Philz Coffee in Palo Alto sells Pepple's vegan donuts on Tuesdays and Thursdays. (If you want to snag one, get there early; Philz only gets about 16 donuts, and only one of each flavor, and they sell out quickly.)
I did a taste test of the cruller, chocolate, and blueberry donuts (See photos). They are all cakey-style donuts, and better than average. Good flavor, and a bit lighter and fluffier than typical cakey donuts.
6037 San Pablo Ave, Oakland, CA 94608
3191 Middlefield Rd, Palo Alto, CA 94306