Is safe to make celery tea?

You can. The taste of the kombucha will be different, of course. Make sure to brew the tea at the right temperature so your kombucha won't end up too bitter.

Mulberry leaf tea is a green tea, and a very healthy one to boot. The only catch is that the leaves must be washed very thoroughly before using them. Mulberry...

In general, yes, it is the same thing. Read the label carefully: somewhere on the label, it should say "essential oil."

I do this all the time, along with onion powder. You get the flavor but not the texture that some object to (like kids).