Whether it's Berliners, cider, or yeasted glazed, doughnuts are one treat I can't pass up.  I recently came upon a formula for a yeasted doughnut with potatoes. It's from Italy. Puglia! So in-between prepping for lunch service at work, I threw together this simple and less-than-sweet-and-supple dough scented with lemon zest. The idea of potatoes intrigued me when  I found it here on Orgolgio Puliese nel mondo. Still I checked other versions, adjust and veering off course. Easy make and to shape, so far my newest favorite.