What is the meaning of the moon cake back to oil

May 5, 2023

Every year the Mid-Autumn Festival must eat moon cakes, in order to figure an auspicious, but this eating moon cakes also have instructions, different moon cakes have different ways of eating, and there are people who say that the moon cakes need to go through a back oil process before consumption, then the moon cakes back oil is what it means?

What does it mean?

After the crust is baked, the moisture content of the crust is very low, about 5%, but the moisture content of the filling is still relatively high, usually around 20%; so the moon cake in the process of placing, the moisture in the filling will migrate to the skin, dry crust after absorbing enough moisture, because the water and oil are not compatible, the original emulsification system will be destroyed, the oil will naturally penetrate outward, giving the impression that the cake is more soft, moist, shiny, transparent The crust is soft, oily, shiny and transparent, i.e. "oil return".

The principle of moon cake oil return

In the moon cake processing, what is added into the moon cake crust is not ordinary cane sugar, but fructose syrup. It plays a vital role in the oil recovery, molding effect and transparency of the mooncake. Fructose glucose syrup has moisturizing property compared with ordinary cane sugar, which can make the flavor and freshness of the mooncake better maintained, while the filling contains a lot of water, and oil return will occur when the water evaporates.

How long does it take for the mooncake to oil up?

It usually takes 3~5 days for the mooncake to return to oil. Moon cake oil return by the environment on the impact is relatively large, if the normal dry environment, moon cake rely on their own body moisture evaporation to oil return, relatively slow, it takes about 3 ~ 5 days, but if the moon cake on the outer crust of the spray some water mist, can enhance the oil return, shorten the oil return time, just a few hours to complete the oil return.

What mooncakes have the fastest oil return

Lemon mooncakes are quick to return oil

This kind of mooncake is very suitable for fresh food, usually you can eat it just after baking, it is relatively soft, if it is left for another night, then the oil return is all done, the most delicious. Principle: Lemon contains a large amount of volatile oil components, will accelerate the evaporation of water in the mooncake filling, making the mooncake quickly back to oil.

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