Soybean Flower - Tofu Flower, also known as Bean Curd Brain, is a famous Han Chinese snack that can be eaten in two ways: sweet and savory. Generally speaking, the sweet food is mainly found in southern China (sweet bean curd flower), while the latter is found in northern China (salty bean curd brain). Soybean flower production must first soak soybeans, depending on the variety or personal preference about 4 to 8 hours, once the soybeans are full of water and then to be pulped, filtered, boiled, and then cooled down to 90 ° C. The final step is called "flushed soybean". The final step is known as "brewing bean curd", which means that it needs to be brewed into the coagulant bean curd and then left to stand for 5 to 15 minutes to complete. The trick to making it taste good is controlling the temperature at which the soymilk and coagulant fuse, as well as the speed and skill with which the soymilk is brewed.

No one can say how many years old tofu is.

It is said that Emperor Qianlong of the Qing Dynasty, who traveled south of the Yangtze River and passed through the plains of Texas, ate old tofu once, and recruited the old tofu maker on the spot to join the "tofu gang" of the imperial kitchen. Nowadays, old tofu has a stronghold in Beijing and is called "Beijing old tofu". In fact, the real authentic old tofu is still from Shandong.

The "Hundred Songs about Food in the Old Capital" says of old tofu: "The cloud skin and flower appearance are different, and it is already time to throw away the book and sleep, but it is like a beautiful person who is half old, and it is still possible to scratch the head and make it look good." This is a witty description. Note: "Old tofu is slightly harder than tofu brain, but the shape is the same. Tofu brain is like a young girl, old tofu is like a half-aged woman."

Old tofu and tofu brain have similarities, the difference is that it does not have the "brain" delicate and tender. It is stewed for a while on a slight fire after being brined, and becomes old tofu, which is served in a bowl with sesame sauce, soy sauce, chives and other seasonings.

The old tofu is called old tofu in "Hundred Songs of Food in the Old City", which says: "Cloud skin and flower appearance recognize the difference, it is already time to throw away the book and sleep, and the fruit is like a good person called half old, it is still possible to scratch the head to get the style." This is a witty description. Note: "Old tofu is slightly harder than tofu brain, but the shape is the same. Tofu brain is like a young girl, old tofu is like a half-aged woman. Tofu brain is mostly sold in the morning, while old tofu is sold in the afternoon. Tofu brains are served with marinade, while old tofu is served with soy sauce and other vegetarian foods." .

Shandong plains county old tofu has a magical place, that is, leave the local can not be done, only in the local can eat authentic plains old tofu, even if the local people to the field can not be done, some people say it is the reason for the water, but no one can not say the specific reasons, which increases the degree of its mystery.