salvia is best,one hit at a time, remember that salvinorin a, "the key ingredient in salvia", has a higher evaporization point than the plant matter it occurs in, it is always my practice to use one hit at time to ensure even heat is applied to each dose. Smoking salvia extract on a cold fire, "like what would be the cherry on a cigarette" isnt actually hot enough to efficiently vaporize the salvinorin a, it will vaporize some but not all of it, taking one hit at a time ensures you will be able to hold constant flame on the salvinorin a to vaporize it effciently, then one hit of 30x will do a wonderful job of helping with meditation and spirtitual harmony.