Potato Cakes peel and cut potatoes, boil in salted water untill just cooked, drain and cool. Next make the garnish. dice sweet potato and onions and sautéd untill cooked. Next I crushed the potatoes and added the filling, seasoned with salt and pepper. form using a ring mold to make the cakes. cook in a cast iron pan with olive oil over an open fire, untill crispy and hot.