If you want to eat, you can try to do it yourself, or bakery baked can be bought to eat. Personally, I don't think you should buy this kind of cupcake from the supermarket, it adds too many preservatives and things like that, for the sake of your own health, it's better to eat less.

Hong Kong Wing steam cake shelf life of 35 days, using healthy "steam" process. Steam technology will be the raw material to steam as a heat transfer medium heating cooked, unlike other techniques to oil, water, fire as a heat transfer medium, so as to retain the original fresh food flavor, but also make the steam cake has a high water content. The emergence of Hong Kong Wing steam cake is also welcomed by the market.