There are several reasons why KFC egg tarts are so delicious:

1. Choice of raw materials: KFC egg tarts use fresh eggs and high-quality cream as the main raw materials, which all have a strong flavor and texture, which can make the tarts more delicious.

2. The fineness of the production process: KFC Egg Tart adopts a unique baking process, which makes the tart's crust crispy and the inner filling delicate and smooth, with a very good taste.

3. Unique formula: The formula of KFC egg tart is obtained after years of practice and improvement, and every ingredient in the formula is chosen to achieve the best taste effect.

4. Strict quality control: KFC, as an international chain restaurant brand, has very strict quality control of its products, from raw material purchasing to production and sales, there are strict standards and processes to ensure the stability of product quality and taste.

In summary, the deliciousness of KFC egg tarts is mainly due to the selection of raw materials, fine production process, unique recipes and strict quality control, so that consumers can enjoy a tasty and delicious egg tarts.