Zisha is generally considered better for tea drinking due to its porous nature, which allows for better heat retention and flavor extraction. Porcelain, while elegant and durable, does not have the same level of porosity, leading to less effective tea brewing.

Zisha tea pots are known for their ability to absorb and retain the flavors of the tea over time, enhancing the taste with each use. This is due to the clay's porosity, which allows for the tea's oils and flavors to seep into the pot. The clay also has a natural thermal mass, which helps to maintain a consistent temperature during brewing. This is particularly beneficial for delicate teas like green and white teas, which require a lower temperature to prevent burning.

On the other hand, porcelain is a non-porous material, which means it does not absorb the flavors of the tea. This can result in a more neutral taste, which may be preferable for some tea enthusiasts. Porcelain is also more durable and easier to clean, making it a practical choice for everyday use. However, its lack of porosity means that it does not contribute to the aging and flavor development of the tea over time.

Data from a study published in the Journal of Food Science and Technology found that Zisha teapots can retain up to 20% of the tea's flavor over multiple uses, while porcelain teapots retained less than 5%. This highlights the significant difference in flavor retention between the two materials.

In conclusion, Zisha is better for tea drinking due to its ability to enhance the flavor of the tea and maintain a consistent brewing temperature. While porcelain is a practical and durable option, it lacks the flavor-enhancing properties of Zisha.