我的建议一下四点：

1.将新购买的蛋糕趁热放入冰箱，然后迅速冷却。 无条件的家庭可以放在橱柜中或阴凉处，密封在蒸锅中或存放在食物篮中，用湿布覆盖并用油纸包裹。 这些方法只能减慢面条的硬化速度，只要时间不算太长，就会有一定的效果。

2.不能食用的蛋糕可以分成几部分，放在密封的盒子或广口瓶中，放入冰箱的冷冻层，然后冷冻。 当您想吃东西时，请提前一天将它们放在冷冻层中，然后慢慢融化，或在室温下取出，慢慢溶解，类似于新鲜的味道。

3.只需切开苹果，然后将其放入蛋糕盒中，并与蛋糕一起保存，直到第二天蛋糕仍然美味为止！ 苹果蛋糕不仅可以保持水分，而且苹果的香气还可以使蛋糕更香。

4.将蛋糕放在密封的容器中，再在密封的容器中加入另一块新鲜面包，当面包变硬时，应及时换上一块新鲜的面包，以使蛋糕可以保持更长的新鲜时间 时间，可以保存一周。 为了获得最佳品质，请在三天内食用。

My advice: at four o 'clock

1. The new buy the cake in the fridge, hot and then rapidly cooling. Unconditional family can be placed in a cupboard or shady and cool place, seal in the steamer or stored in a food basket, cover with a damp cloth and paper package. These methods can only slow down the noodles hardening speed, as long as the time is not too long, there will be some effect.

2. Can't eat the cake can be divided into several parts, in the sealed box or jar, in the fridge frozen layer, and then frozen. When would you like to eat things, please put them in one day in advance of frozen layer, then slowly melting, or at room temperature, dissolved slowly, like the taste of fresh.

3. The need to cut the apple, and then put it in the cake box, with cake and save, until the second day still delicious cake! Apple cake not only can keep moisture, and the fragrance of apple can also make the cake more.

4. Put the cake in the sealed container, in a sealed container to join another piece of fresh bread, when the bread hardens, should be put on a piece of fresh bread, in order to make the cake can keep longer time fresh time, can be stored for a week. In order to get the best quality, please eat in three days.

非常愿意解答：

常温的话也就1-2天（26度左右），每个蛋糕的保存期限都是冷藏3~4天，冷冻的话可以延长到7天但是这个都有一各大前提，.就是要把蛋糕密封的好，不然蛋糕很容易吸收冰箱的异味。还有没有密封好的蛋糕被冰箱吸取水份。

春天和秋天可以保存一天左右，夏天的话一天就会变味儿，冬天的话两天也是可以的。但是最好刚买就吃了。如果是鲜奶油的话，它比值为奶油的可塑性差一点，熔点也低一点，所以更容易化，如果买到的蛋糕在室温下没放多久就有要化的感觉，吃在嘴里也水分较多，那就是真正的纯奶油。反之，如果蛋糕在室温下放置大半天形状都不变，入口也不容易化，那就是含反式脂肪酸的植物奶油。

不过我建议奶油蛋糕买回来后，尽量快点吃完，不要放很长时间[害羞]