The flagship store of pineapple-cake specialist Dawncake (日出鳳梨酥) also sells ice cream in flavours such as Hakka lei cha (擂茶, léi chá) and, of course, pineapple. The high ceilings and faux-vintage card-catalogue cabinets evoke Harry Potter, but the building was actually an eye hospital during Japanese rule.
It's two minutes' walk from Taichung Train Station.