I'm not sure if this has been posted before, but there is a great new self serve frozen yogurt shop in downtown Mt. Kisco. It is located right next to the movie theater and across from Belizzi.
They have 12 flavors at any one time and change them around from time to time. They also have 40+ toppings (fruit + candy). You pay by by the weight of your creation. The Yogurt is excellent (very creamy) and I highly recommend trying it.
Here is the info
134 E Main Street, Mount Kisco, NY 10549