RE: You have got to try this!
I'm not sure what Clam Pizza the writer was referring to but it reminded me of a neat little pizza I used to get in Lebanon, OH, SW OH. It was called a Pierogi Pizza and it was a pizza crust with cheese and butter and sauces on the crust, then a thick layer of mashed potatoes and baked to a golden brown. Darn good. However, the place that made them is no longer in business.