Of course not. Authentic teapot tastes good because of the material characteristics of purple sand, which is breathable, absorbs tea fragrance and tea oil and does not leak water. If you glaze with white porcelain, it is equivalent to giving up the important function of the teapot, so it is meaningless for making tea.

Teapots made of pure purple mud, after a long period of soaking, will make the tea soup more mellow and have better flavor. However, the teapot should be kept upright, clean inside and outside, and don't accumulate too many tea stains on the inner wall of the teapot.

I hope the above humble opinions can help you!