Gracias for all your help. Just having a St. Patty's day celebration and was asked to bring russets. Will pass on all this info to them, I find it fascinating. Especially the part about the import of potatoes to Mx. No matter, large white potatoes covered with dirt will do. We are having a potato bar and wanted large potatoes. Will try Gabriel's Fruteria. I know exactly where you are talking about on the Carretera.