Why did the "Tujia sauce cake" that once burst into red at the school gate suddenly disappear?

I wonder if you still remember the snacks popular in the school snack street a few years ago? I remember that four or five years ago, a kind of food called "Tujia Sauced Cake" was the most popular near the university. Because it is cheap, can fill the stomach, tastes fragrant and crisp, so a wave of "Tujia sauce-flavored cakes" became popular at one time. Some people say that this snack is a local snack, but the vendor who sells the sauce-flavored cakes can't tell where it came from.

Everyone knows that Tujia Maotai-flavor cakes are already quite popular. No matter where you go, you can see it in the streets and alleys, and everyone can't put it down, because its taste is unusually strong. After the pie is fried, it tastes crisp and tender with the secret sauce, and it is sweet and spicy. It tastes really enjoyable. Therefore,

In fact, it is mainly because Tujia Maotai-flavor cake is a snack. Although the sauce is delicious, its taste and form are too single, so its best-selling time is limited. Besides, no matter what kind of snacks, if you can't create new tastes and ideas, it will definitely be forgotten. Even if it can last for a while, it won't last forever.

Therefore, if we can innovate more and create more new flavors, we will not be so tepid and gradually lose popularity as we are now. It can be seen that innovation is still very important for the food industry.