Canning on ceramic top stoves
I'm sure this has been asked many times before, but I'm wondering about using my Presto pressure canner on my ceramic top stove. The bottom of the canner is not totally flat - I'm not sure how to describe it except to say that the bottom has a stove burner sized circle, and then the rest of the bottom is slightly raised around this circle. So, the only part of the bottom that is would be in contact with the burner is this circle on the bottom. I'm not sure if that's clear, but it's the only way I can think of to describe it. I've had the canner for probably 15 years but it works fine as far as I know; haven't canned in the past few years.
I've read conflicting opinions on canning on ceramic top stoves, and I thought this would be the best place to get informed advice. Thanks in advance. :)