Yili Brown Charcoal Yogurt will have a brown color after opening. This is because caramel coloring is added during the production process of Yili Charcoal Yogurt, giving it a unique brown appearance.

Caramel coloring is a common food additive that gives foods a dark appearance and unique taste. When making Yili charcoal yogurt, caramel coloring is added to the yogurt to make it brown.

In addition to providing a unique appearance, caramel coloring can also add texture and flavor to foods. It brings a slightly burnt aroma and slightly sweet flavor to the chargrilled yogurt, making it even more appealing.

It should be noted that the color of chargrilled yogurt may vary depending on the batch of product or the length of storage time, but it will usually show a distinct brown color.

In general, Yili Brown Charcoal Yogurt turns brown when opened because of the addition of caramel pigment. It not only provides the yogurt with a unique appearance, but also gives it a special taste and taste.