If you want tart, light, creamy plain frozen yogurt you have to go to the Lord and Taylor Cafe (top floor L&T, Chevy Chase)and order the plain frozen yogurt (they call it vanilla- ignore that). They used to have it at 40 carrots in Bloomies ( forever ago). You can get it plain, or with walnuts and fruit and some other toppings. The small is plenty satisfying. I have been getting this for over 15 years or so. The recipe or mix is imported from NYC.