There are only black sesame seeds in black sesame balls, and black sesame seeds, black rice, black beans, black wolfberry and mulberries in five black cakes. Details are as follows.

1, black sesame. Black sesame is a flax plant of flax family. The black seeds of sesame, also known as flax, oil hemp, giant victory and fat hemp, are distributed in Anhui, Hubei, Guizhou, Yunnan, Guangxi and Sichuan. Black sesame contains a lot of fat and protein, and also contains nutrients such as sugar, vitamin A, vitamin E, lecithin, calcium, iron and chromium.

2. Black rice. Black rice is a kind of rice used for both medicine and food, belonging to glutinous rice. Black rice is a characteristic variety formed by long-term cultivation of Gramineae rice. There are two kinds of grain types: indica rice and japonica rice, and the grain quality is divided into waxy and non-waxy. Brown rice is black or dark brown. Black rice is dark in color and rich in nutrition, and has the reputation of "black pearl" and "king of rice in the world".

3. Black beans. Black beans are black seeds of leguminous soybeans. The protein content of black beans is 36%, which is easy to digest, and it is of great significance to meet the human demand for protein. Fat content 16%, mainly containing unsaturated fatty acids, the absorption rate is as high as 95%.

4. Black wolfberry. Lycium barbarum is sweet and flat, and rich in protein, Lycium barbarum polysaccharide, amino acids, vitamins, minerals, trace elements and other nutrients. It is also rich in black fruit pigment (natural procyanidins, OPC for short), and the OPC content exceeds that of blueberries.

5. Mulberry. The main nutritional components of mulberry are water, sugar, crude protein, ash, crude fiber, free acid, soluble nitrogen-free and so on. In addition, mulberry also contains essential amino acids, easily absorbed polysaccharides, rich vitamins, red pigments and minerals such as calcium, iron, zinc and selenium that the human body lacks.