Littaro chestnut is native to temperate regions of the Northern Hemisphere. Most chestnut trees are 20-40 meters tall are deciduous trees, with only a few being shrubs. All kinds of chestnut trees bear edible nuts, with simple leaves, elliptical elongated shapes, ranging 10 to 30 centimeters in length to 4 to 10 centimeters in width, thorny teeth on the edges.

The male flower is an erect Catkin, the female flower is single several in the involucre. Nuts are enclosed in densely spined bracts, with a diameter of 5-11 centimeters, equivalent to 75% of grains; Fresh chestnuts also account for 40%, 2.4 times that of potatoes. The protein content of fresh chestnuts is 4% to 5%.

Although as abundant as peanuts walnuts, it is slightly higher than cooked rice. But in some aspects, the nutrition of chestnut is higher than that of grain. Chestnuts are rich in vitamin B1 B2, with vitamin B2 content at least four times that of rice. Every 100 grams also contains 24 milligrams of vitamin C, which is incomparable to grains. Peel the chestnuts, dry grind them. Take an appropriate amount of chestnut powder boil it in clean water to make a paste, then mix with white sugar. 250g chestnuts, 1000g red beans, 1000g white sugar, 40g frozen powder.

Wash the chestnuts, boil them slightly, remove the skin, then put them into a pot to cook until cooked; Soak the red beans in water boil them until tender. Rub off the skin of the beans, sieve them, then filter the water with gauze to make bean paste; Boil Kiyomizu ware, add frozen powder to boil, add white sugar, filter off the residue after boiling, boil with the bean paste, stir while boiling, start cooking when the bean paste is thick. the Neolithic ruins in Banpo, Xi'an, there has been a physical remains of chestnuts, which has a feeding history of more than 6000 years. During the Spring Autumn Period the Warring States period, chestnut planting was very popular.

The sweet delicious chestnut of Ah Xiang has been a precious fruit since ancient times is one of the best among dried fruits. Chestnuts belong to the nut category, but they are as rich in oil as nuts such as walnuts, hazelnuts, almonds, their starch is very high.