This fruit grows all over the mountains, sells for more than 10 yuan per jin, and is good for children's intelligence

In the past, food in rural areas was extremely scarce. To find food, farmers would go up into the mountains to search, and the mountains had all kinds of wild vegetables and wild fruits.
Because they were forced by necessity, apart from foods that could be eaten raw, they would also think of every possible way to make the ones that could not be eaten raw edible. One of these wild fruits is called the small oak tree.
This tree only produces one kind of green fruit, and the fruit's yield is extremely high. Generally, one tree can produce more than ten jin of wild fruit.
This fruit contains extremely high starch, so Grandpa and Grandma made it into liangfen, and this liangfen has since become a specialty dish of Shaanxi. It can improve the human body's immunity and is also greatly beneficial to children's intelligence!