There is no fat in the ingredient list of Nongfu Spring tea (π flavor) and iced black tea beverage, but the taste is very sweet, which may be due to the addition of artificial sweeteners or other high-sweetness substances.

In modern food processing, artificial sweetener is a common food additive, which can provide a very sweet taste without increasing the fat content of food. These artificial sweeteners include saccharin, aspartame, acesulfame, etc.

In addition, some substances with high sweetness, such as maltodextrin and fructose, can also provide sweetness for drinks without increasing the fat content.

Therefore, even if fat is not listed in the ingredient list, these drinks can still have a very sweet taste. But for consumers, choosing low-sugar or sugar-free drinks may be more in line with health needs.