This is my favorite frozen yogurt place because, to my knowledge, it's the only one offering mochi as a topping. Other places will boast more yogurt flavors, but the original is usually the best anyway.
This time I was bold (read: foolish) and got a swirl of the peanut butter and chocolate hazelnut. It wasn't bad, but I sorely missed the simplicity of the original flavor. The original has just the right amount of tanginess, and it doesn't overpower the toppings. Try the original with mochis and mango or strawberry boba (or both!).
Unfortunately, the only location in Charlotte is at the airport, located toward the beginning of concourse D. There is never a long line and the employees are super friendly. Don't be afraid to sample the various flavors, but always come back to the original!