Fro-yo girl here. Unless you feel the need to try every fro-yo shop, take my advice, save your money and avoid getting fro-yo at the following places:
* Marble Slab Creamery: I don't think they have tart fro-yo but even their vanilla fro-yo is really bad. Definitely tastes like artificial sweetener. The fruit toppings are frozen.
* Cold Stone Creamery: They offer a scoopable tart fro-yo called Tart & Tangy. The flavor is a little better than Marble Slab's but not by much. It's an odd flavor that tastes citrusy but not milky and tangy in the way real yogurt would taste. The fruit toppings are frozen.
* Penguino's: 101 4th St. (inside the Metreon), San Francisco, CA, 94103
Not only does their plain tart taste like watered down bland ice milk, the portion is very stingy.
* Michael's Gelato: 440 University Avenue, Palo Alto, CA 94301
They've made a half-hearted attempt at offering fro-yo called Tart Tango. The orange flavor tasted like powdered orange drink mix and isn't tart. The fruit toppings were rotten.
* Sweet Corner: 650 Castro St, Mountain View, CA 94041
The yogurt tastes awful and the texture is weird - very grainy.
* Orange Tree: 510 Barber Ln, Milpitas, CA 95035
Too icy, bland, artificial tasting tart fro-yo in a self-serve setting.
* DIY Yogurt: 20956 W Homestead Rd#D, Cupertino, CA 95014
It's hard to tell which flavors are supposed to be tart. They all taste like they're artificially sweetened. Mediocre self-serve fro-yo.
You know you love me. X0 X0, fro-yo girl.
