I usually use a pottery tea cup in the morning!!
The pottery tea cup retains hotness than the porcelain tea cup. So if I can’t drink a pottery cup soon, I can keep tea hotter than using a porcelain cup.
Pottery is made of clay, and porcelain (ex.Kaolin) is made from ceramic stone powder. Pottery includes air more than porcelain. Pottery has low thermal conductivity.
A pottery cup is less likely to be hotter than a porcelain cup, even if the tea is hot. This is because it’s easy to drink.
Please try pottery tea cups and soup cups!!