I've written 22 yogurt shop reviews on OpenRice so far, and I have finally found the best yogurt shop in HK.
After reviewing Cherry on Top, Yogo, YoMama, TuttiFrutti, TuttiMelon, Crumbs, etc, I could not find any shop worth it and any shop that had similar yogurt experience to the U.S. But I tried Hey Yo! last week using a GroupBuy coupon (50%) off and I was surprised by the small shop. It finally met my expectations.
Hey Yo! sells cakes and other items, and they only had two flavors of yogurt. I tried original and it tasted of good quality. But I was surprised by the variety of toppings. They had special gourmet jelly desserts, Maltesers, lots of brand-name candy, even had FRESH blueberries, strawberries, kiwi and many other fruits. Everything is presented very clean, and premium. (other shops are usually dirty and do not show topping well)
I was also surprised to see cheesecake pieces as toppings. These are very expensive high-quality toppings and they offer the price (pay by weight) as TuttiFrutti (which offers no fruit and no good toppings).
The environment was comfortable, not too many tables, but enough for a few groups of people. There were about three staff and they were all friendly and responsive.
The price is the same as the other shops, the yogurt is good quality, the toppings are the best, and the service/staff are good. I can easily say that this is the BEST run yogurt chain in Hong Kong. I can't say it's the best yogurt, but it's one of the best, possibly tied with YoMama and TuttiMelon. I will definitely come back and bring friends. next time I'll take photos. I just wish I bought more GroupBuy coupons now!