Is there a Tantrayana (Tibetan Buddhism) training related to "burning" past bad karma?

I heard (only heard) a couple of times somewhere that there is a training in Tantrayana that can purify you, by deleting or burning your own past bad karma. Unfortunately, I don't know the name of this training -- but I lived in Indonesia and sometimes a Tantrayana monk came and offered something like this (again, **if I remember correctly**) Is there some kind of training like this?