Drying jujube may give a feeling of difficulty in swallowing, so many people prefer to drink jujube soup, which not only tastes good but also digests quickly. However, when boiling jujube, a milky white substance appears on the outside. So, why does boiling jujube produce foam? What is the white foam on the surface of the boiled jujube?

Why there is foam when boiling jujube

1. The foam is the dirty things in the jujube that are boiled out. I don’t think this is the reason because even after washing clean jujubes, they still look like this.

2. The sugar in the jujube is boiled out, forming crystals. I think this name is more reliable because jujubes contain a very high sugar content. When boiling jujubes, the sugar dissolves into the water, part of which produces foam, which is similar in principle to the formation of frost on persimmon cakes.

3. Additives are added to the jujube in this news report. Indeed, some unscrupulous merchants add formaldehyde solution to fresh jujubes to extend their shelf life, which is why many people believe this name.

How to cook jujube to make it taste good

Raw materials: 30 jujubes

Preparation method: Remove the kernel from the jujube and place it in a small thermos. Add boiling water and steam for three hours, and drink it as tea when it is dry.

The best jujube is the chicken heart jujube. Jujube has the properties of invigorating the spleen and stomach, benefiting the blood and replenishing the spirit, nourishing the five internal organs (especially the heart), and can treat anemia, insomnia, and neurasthenia. Jujube that has developed a wine-like smell after storage for a period of time has become moldy and should not be consumed.

Chuanxiong Jujube Water

Raw materials: Chuanxiong 30 cents, jujube 15 pieces, a small amount of old rock sugar

Preparation method: Add three bowls of cold water to the raw materials and boil for forty-five minutes.

Effects: Both Chuanxiong and jujube have the effects of replenishing Qi and blood.

How to buy jujube

When buying jujube, observe the fruit shape, color, and wrinkles. Pay special attention to the stem end; if there is a hole or there is a coffee-colored powdery substance, it indicates that the flesh has been infested with insects, and a ring of insect excrement can be seen in the middle of the flesh when opened.

Press the jujube with your hand, feeling solid and dry, with fine flesh; those with soft and rough texture have not been dried properly, indicating poor quality; sticky and damp to the touch, indicating excessive moisture, and not suitable for long-term storage.

Cut open the jujube, pinkish yellow, thin and firm, without silk threads, with a sweet and sticky texture, offering high cost-performance.

Pinkish yellow, with large kernels, connected by silk threads, with a rough taste, lacking in sweet taste or with a slightly sour taste, indicating poor quality.