In a medium pot, boil potatoes in salt water, over medium heat and cook them until they are tender. Then mash them with a hand beater or masher, set them aside to cool.
Place milk in the microwave for 20-30 seconds to warm. Then combine yeast, and sugar into the warm milk. Set aside and allow the yeast to activate and foam, about 5-10 minutes. In a medium bowl, add 1½ cups of flour, salt, and mash potatoes and using a fork, combine the ingredients. Then add the yeast, and begin to knead the dough. If the dough is sticky, add some of the remaining half cup of flour until it is no longer sticky. Knead for about 10 minutes, then place in a greased bowl, cover with saran wrap, and towel. Set dough in a warm area of your kitchen and let it rise until double in size, approximately an hour.
Roll out the dough on to a lightly floured surface to 1 cm (1/3 inch) thickness and cut into circles. Prick with a knife to keep big bubbles from forming.
Heat oil in a fry pan, up to 360-375 degrees F or 190 degrees C. Make sure the oil is at least 1 inch (2.5cm) deep. Place in hot oil, fry for about 30-40 seconds, once you see bubbles forming and a golden colour on the edges, turn them over then fry for another 20-30 seconds, then remove with slotted spoon and place on paper towel.
Serve warm with toppings of your choice. Often served as a snack or with bean or lentil soup