I don’t know what quality you have seen, but in my experience, the black tea in black jasmine pearl is usually very cheap tea. If you like jasmine pearl, maybe try the finer green tea version. I’d buy the very small and lighter color ones, not the darker color. Because the color reflects the quality of the green tea.
As for how jasmine tea is made, there is a detail article in Tea Guardian:
This article discussed jasmine pearl:
Adding jasmine petals in already processed tea is a cheap version.
Sorry the page links show up funny. I did not know that would happen.
