冻酸奶a brand name for a very cold, sweet food made from frozen yogurt (= a slightly sour thick food made from milk, and often sugar and fruit)
Froyo is similar to ice cream and I'm sure you would love its creamy taste.
She ordered low-fat froyo instead of ice cream. 她点了低脂的冻酸奶而不是冰淇淋。
It was ridiculously hot outside, so we got some fro-yo.